diff --git a/backend/CHANGELOG.md b/backend/CHANGELOG.md
index 779368e..444fdd9 100644
--- a/backend/CHANGELOG.md
+++ b/backend/CHANGELOG.md
@@ -1,4 +1,9 @@
 # Changelog
+## [2.0.1] - 2025-01-17
+### Fixes
+- Signing of MTP happens after estimation
+- Updated supportedNetworks to use from default if apiKey specific config is not found
+
 ## [1.8.0] - 2024-12-25
 ### Breaking changes
 - removed `/whitelist/v1`, `/removeWhitelist/v1`, `/checkWhitelist/v1` endpoints.
diff --git a/backend/demo.env b/backend/demo.env
index f78986c..0a066dc 100644
--- a/backend/demo.env
+++ b/backend/demo.env
@@ -1,6 +1,7 @@
 NODE_ENV=development
 LOG_LEVEL=debug
 UNSAFE_MODE=false
+MTP_VGL_MARKUP=30000
 
 API_HOST=127.0.0.1
 API_PORT=5050
diff --git a/backend/package.json b/backend/package.json
index 07868e5..a3cef18 100644
--- a/backend/package.json
+++ b/backend/package.json
@@ -1,6 +1,6 @@
 {
   "name": "arka",
-  "version": "2.0.0",
+  "version": "2.0.1",
   "description": "ARKA - (Albanian for Cashier's case) is the first open source Paymaster as a service software",
   "type": "module",
   "directories": {
diff --git a/backend/src/paymaster/index.ts b/backend/src/paymaster/index.ts
index 3632461..d309942 100644
--- a/backend/src/paymaster/index.ts
+++ b/backend/src/paymaster/index.ts
@@ -42,17 +42,19 @@ import { abi as verifyingPaymasterV2Abi, byteCode as verifyingPaymasterV2ByteCod
 export class Paymaster {
   feeMarkUp: BigNumber;
   multiTokenMarkUp: number;
+  MTP_VGL_MARKUP: string;
   EP7_TOKEN_VGL: string;
   EP7_TOKEN_PGL: string;
   priceAndMetadata: Map<string, TokenPriceAndMetadataCache> = new Map();
   nativeCurrencyPrice: Map<string, NativeCurrencyPricyCache> = new Map();
 
-  constructor(feeMarkUp: string, multiTokenMarkUp: string, ep7TokenVGL: string, ep7TokenPGL: string) {
+  constructor(feeMarkUp: string, multiTokenMarkUp: string, ep7TokenVGL: string, ep7TokenPGL: string, mtpVglMarkup: string) {
     this.feeMarkUp = ethers.utils.parseUnits(feeMarkUp, 'gwei');
     if (isNaN(Number(multiTokenMarkUp))) this.multiTokenMarkUp = 1150000 // 15% more of the actual cost. Can be anything between 1e6 to 2e6
     else this.multiTokenMarkUp = Number(multiTokenMarkUp);
     this.EP7_TOKEN_PGL = ep7TokenPGL;
     this.EP7_TOKEN_VGL = ep7TokenVGL;
+    this.MTP_VGL_MARKUP = mtpVglMarkup;
   }
 
   packUint(high128: BigNumberish, low128: BigNumberish): string {
@@ -646,20 +648,23 @@ export class Paymaster {
         const ETHprice = await ecContract.cachedPrice();
         ethPrice = ETHprice
       }
-      const paymasterAndData = await this.getPaymasterAndDataForMultiTokenPaymaster(userOp, validUntil, validAfter, feeToken, ethPrice, paymasterContract, signer, chainId);
+      let paymasterAndData = await this.getPaymasterAndDataForMultiTokenPaymaster(userOp, validUntil, validAfter, feeToken, ethPrice, paymasterContract, signer, chainId);
 
       if (!userOp.signature) userOp.signature = '0x';
       const response = await provider.send('eth_estimateUserOperationGas', [userOp, entryPoint]);
-      userOp.verificationGasLimit = response.verificationGasLimit;
+      userOp.verificationGasLimit = BigNumber.from(response.verificationGasLimit).add(this.MTP_VGL_MARKUP).toHexString();
       userOp.preVerificationGas = response.preVerificationGas;
       userOp.callGasLimit = response.callGasLimit;
       userOp.paymasterAndData = paymasterAndData
 
+      // After estimating it with proper paymasterAndData value
+      paymasterAndData = await this.getPaymasterAndDataForMultiTokenPaymaster(userOp, validUntil, validAfter, feeToken, ethPrice, paymasterContract, signer, chainId);
+
       const returnValue = {
         paymasterAndData,
-        verificationGasLimit: response.verificationGasLimit,
-        preVerificationGas: response.preVerificationGas,
-        callGasLimit: response.callGasLimit,
+        verificationGasLimit: userOp.verificationGasLimit,
+        preVerificationGas: userOp.preVerificationGas,
+        callGasLimit: userOp.callGasLimit,
       }
       return returnValue;
     } catch (err: any) {
diff --git a/backend/src/plugins/config.ts b/backend/src/plugins/config.ts
index 196f053..856af10 100644
--- a/backend/src/plugins/config.ts
+++ b/backend/src/plugins/config.ts
@@ -35,6 +35,7 @@ const ConfigSchema = Type.Strict(
     DEFAULT_BUNDLER_API_KEY: Type.String(),
     MULTI_TOKEN_PAYMASTERS: Type.String(),
     MULTI_TOKEN_ORACLES: Type.String(),
+    MTP_VGL_MARKUP: Type.String() || '30000',
   })
 );
 
@@ -73,7 +74,8 @@ const configPlugin: FastifyPluginAsync = async (server) => {
     USE_KMS: process.env.USE_KMS,
     DEFAULT_BUNDLER_API_KEY: process.env.DEFAULT_BUNDLER_API_KEY,
     MULTI_TOKEN_PAYMASTERS: process.env.MULTI_TOKEN_PAYMASTERS,
-    MULTI_TOKEN_ORACLES: process.env.MULTI_TOKEN_ORACLES
+    MULTI_TOKEN_ORACLES: process.env.MULTI_TOKEN_ORACLES,
+    MTP_VGL_MARKUP: process.env.MTP_VGL_MARKUP
   }
 
   const valid = validate(envVar);
@@ -109,6 +111,7 @@ const configPlugin: FastifyPluginAsync = async (server) => {
     DEFAULT_BUNDLER_API_KEY: process.env.DEFAULT_BUNDLER_API_KEY ?? '',
     MULTI_TOKEN_PAYMASTERS: process.env.MULTI_TOKEN_PAYMASTERS ?? '',
     MULTI_TOKEN_ORACLES: process.env.MULTI_TOKEN_ORACLES ?? '',
+    MTP_VGL_MARKUP: process.env.MTP_VGL_MARKUP ?? '30000'
   }
 
   server.log.info(config, "config:");
diff --git a/backend/src/routes/admin-routes.ts b/backend/src/routes/admin-routes.ts
index 8fe76d5..1877502 100644
--- a/backend/src/routes/admin-routes.ts
+++ b/backend/src/routes/admin-routes.ts
@@ -18,7 +18,7 @@ import { getNetworkConfig } from "../utils/common.js";
 import { Paymaster } from "../paymaster/index.js";
 
 const adminRoutes: FastifyPluginAsync = async (server) => {
-  const paymaster = new Paymaster(server.config.FEE_MARKUP, server.config.MULTI_TOKEN_MARKUP, server.config.EP7_TOKEN_VGL, server.config.EP7_TOKEN_PGL);
+  const paymaster = new Paymaster(server.config.FEE_MARKUP, server.config.MULTI_TOKEN_MARKUP, server.config.EP7_TOKEN_VGL, server.config.EP7_TOKEN_PGL, server.config.MTP_VGL_MARKUP);
 
   const prefixSecretId = 'arka_';
 
diff --git a/backend/src/routes/deposit-route.ts b/backend/src/routes/deposit-route.ts
index f987ca5..db34d52 100644
--- a/backend/src/routes/deposit-route.ts
+++ b/backend/src/routes/deposit-route.ts
@@ -11,7 +11,7 @@ import { printRequest, getNetworkConfig } from "../utils/common.js";
 import { APIKey } from "../models/api-key.js";
 
 const depositRoutes: FastifyPluginAsync = async (server) => {
-    const paymaster = new Paymaster(server.config.FEE_MARKUP, server.config.MULTI_TOKEN_MARKUP, server.config.EP7_TOKEN_VGL, server.config.EP7_TOKEN_PGL);
+    const paymaster = new Paymaster(server.config.FEE_MARKUP, server.config.MULTI_TOKEN_MARKUP, server.config.EP7_TOKEN_VGL, server.config.EP7_TOKEN_PGL, server.config.MTP_VGL_MARKUP);
 
     const SUPPORTED_ENTRYPOINTS = {
         EPV_06: server.config.EPV_06,
diff --git a/backend/src/routes/metadata-routes.ts b/backend/src/routes/metadata-routes.ts
index 8071e23..33f1e3a 100644
--- a/backend/src/routes/metadata-routes.ts
+++ b/backend/src/routes/metadata-routes.ts
@@ -117,17 +117,9 @@ const metadataRoutes: FastifyPluginAsync = async (server) => {
       }
 
       const chainsSupported: { chainId: number, entryPoint: string }[] = [];
-      if (supportedNetworks) {
-        const buffer = Buffer.from(supportedNetworks, 'base64');
-        const SUPPORTED_NETWORKS = JSON.parse(buffer.toString())
-        SUPPORTED_NETWORKS.map((element: { chainId: number, entryPoint: string }) => {
-          chainsSupported.push({ chainId: element.chainId, entryPoint: element.entryPoint });
-        })
-      } else {
-        SupportedNetworks.map(element => {
-          chainsSupported.push({ chainId: element.chainId, entryPoint: element.entryPoint });
-        })
-      }
+      SupportedNetworks.map(element => {
+        chainsSupported.push({ chainId: element.chainId, entryPoint: element.entryPoint });
+      })
       const tokenPaymasterAddresses = {
         ...PAYMASTER_ADDRESS,
         ...customPaymasters,
diff --git a/backend/src/routes/whitelist-routes.ts b/backend/src/routes/whitelist-routes.ts
index 4181112..f85847f 100644
--- a/backend/src/routes/whitelist-routes.ts
+++ b/backend/src/routes/whitelist-routes.ts
@@ -12,7 +12,7 @@ import { APIKey } from "../models/api-key.js";
 import { ContractWhitelistDto } from "../types/contractWhitelist-dto.js";
 
 const whitelistRoutes: FastifyPluginAsync = async (server) => {
-  const paymaster = new Paymaster(server.config.FEE_MARKUP, server.config.MULTI_TOKEN_MARKUP, server.config.EP7_TOKEN_VGL, server.config.EP7_TOKEN_PGL);
+  const paymaster = new Paymaster(server.config.FEE_MARKUP, server.config.MULTI_TOKEN_MARKUP, server.config.EP7_TOKEN_VGL, server.config.EP7_TOKEN_PGL, server.config.MTP_VGL_MARKUP);
 
   const SUPPORTED_ENTRYPOINTS = {
     EPV_06: server.config.EPV_06,
diff --git a/backend/src/server.ts b/backend/src/server.ts
index 4a7f03e..674b187 100644
--- a/backend/src/server.ts
+++ b/backend/src/server.ts
@@ -56,7 +56,7 @@ const initializeServer = async (): Promise<void> => {
     logLevel: "warn"
   });
 
-  const paymaster = new Paymaster(server.config.FEE_MARKUP, server.config.MULTI_TOKEN_MARKUP, server.config.EP7_TOKEN_VGL, server.config.EP7_TOKEN_PGL);
+  const paymaster = new Paymaster(server.config.FEE_MARKUP, server.config.MULTI_TOKEN_MARKUP, server.config.EP7_TOKEN_VGL, server.config.EP7_TOKEN_PGL, server.config.MTP_VGL_MARKUP);
 
   await server.register(paymasterRoutes, {paymaster});
 
diff --git a/backend/src/utils/common.ts b/backend/src/utils/common.ts
index 5e1aeeb..290ac62 100644
--- a/backend/src/utils/common.ts
+++ b/backend/src/utils/common.ts
@@ -13,7 +13,11 @@ export function getNetworkConfig(key: any, supportedNetworks: any, entryPoint: s
   if (supportedNetworks !== '') {
     const buffer = Buffer.from(supportedNetworks, 'base64');
     const SUPPORTED_NETWORKS = JSON.parse(buffer.toString())
-    return SUPPORTED_NETWORKS.find((chain: any) => { return chain["chainId"] == key && entryPoint.includes(chain["entryPoint"]) });
+    const result = SUPPORTED_NETWORKS.find((chain: any) => { return chain["chainId"] == key && entryPoint.includes(chain["entryPoint"]) });
+    if (!result) {
+      return SupportedNetworks.find((chain) => chain.chainId == key && entryPoint.includes(chain.entryPoint));
+    }
+    return result
   } else
     return SupportedNetworks.find((chain) => chain.chainId == key && entryPoint.includes(chain.entryPoint));
 }