diff --git a/config.xml b/config.xml
index f783b068f..ed5414b61 100755
--- a/config.xml
+++ b/config.xml
@@ -1,5 +1,5 @@
 <?xml version='1.0' encoding='utf-8'?>
-<widget android-versionCode="572" id="org.phidatalab.radar_armt" ios-CFBundleIdentifier="org.phidatalab.radar-armt" ios-CFBundleVersion="1" version="2.6.2-alpha" xmlns:android="http://schemas.android.com/apk/res/android">
+<widget android-versionCode="573" id="org.phidatalab.radar_armt" ios-CFBundleIdentifier="org.phidatalab.radar-armt" ios-CFBundleVersion="1" version="2.6.3-alpha" xmlns:android="http://schemas.android.com/apk/res/android">
     <name>RADAR Questionnaire</name>
     <description>An application that collects active data for research.</description>
     <author email="radar-base@kcl.ac.uk" href="http://radar-base.org/">RADAR-Base</author>
diff --git a/src/app/core/services/config/remote-config.service.ts b/src/app/core/services/config/remote-config.service.ts
index ec648f773..5ab60a148 100644
--- a/src/app/core/services/config/remote-config.service.ts
+++ b/src/app/core/services/config/remote-config.service.ts
@@ -106,6 +106,7 @@ class FirebaseRemoteConfig implements RemoteConfig {
 export class FirebaseRemoteConfigService extends RemoteConfigService {
   private readonly configSubject: BehaviorSubject<RemoteConfig>
   private FETCH_TIMEOUT_SECONDS = 20
+  private MINIMUM_FETCH_INTERVAL_SECONDS = 21600 // 6 hours
 
   constructor(
     private firebase: FirebaseX,
@@ -116,7 +117,7 @@ export class FirebaseRemoteConfigService extends RemoteConfigService {
     super(storage)
     this.configSubject = new BehaviorSubject(new EmptyRemoteConfig())
     this.platform.ready().then(() => {
-      FirebasePlugin.setConfigSettings(this.FETCH_TIMEOUT_SECONDS, null)
+      FirebasePlugin.setConfigSettings(this.FETCH_TIMEOUT_SECONDS, this.MINIMUM_FETCH_INTERVAL_SECONDS)
     })
   }
 
diff --git a/src/assets/data/defaultConfig.ts b/src/assets/data/defaultConfig.ts
index 7f3e0e992..2ffb21383 100755
--- a/src/assets/data/defaultConfig.ts
+++ b/src/assets/data/defaultConfig.ts
@@ -16,7 +16,7 @@ import { Localisations } from './localisations'
 export const DefaultPlatformInstance = 'RADAR-CNS'
 
 // *Default app version
-export const DefaultAppVersion = '2.6.1-alpha'
+export const DefaultAppVersion = '2.6.3-alpha'
 
 // *Default Android package name
 export const DefaultPackageName = 'org.phidatalab.radar_armt'