Problem setting up MS200

[gnulabis]

Hi,

Thank you very much for your work. I ordered an MS200 floor-heating thermostat and used your tool to configure it to use my local MQTT in home assistant, it all worked great.

So much that I ordered a second one for another part of my house. However, with the second thermostat I cannot complete the setup.

I connect to the device's AP and I can see it:

$ ./meross-info 
Getting info about device with IP 10.10.10.1
┌─────────────┬───────────────────────────────────────────────────────────────────────────────┐
│Device       │mts200 eu rtl8710cm (hardware:7.0.0 firmware:7.6.11)                           │
├─────────────┼───────────────────────────────────────────────────────────────────────────────┤
│UUID         │xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx                                               │
├─────────────┼───────────────────────────────────────────────────────────────────────────────┤
│Mac address  │c4:e7:ae:0f:19:48                                                              │
├─────────────┼───────────────────────────────────────────────────────────────────────────────┤
│IP address   │10.10.10.1                                                                     │
├─────────────┼───────────────────────────────────────────────────────────────────────────────┤
│Credentials  │User: c4:e7:ae:0f:19:48                                                        │
│             │Password: xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx                                   │
├─────────────┼───────────────────────────────────────────────────────────────────────────────┤
│MQTT topics  │Publishes to: /appliance/24110618749011601203c4e7ae0f1948/publish              │
│             │Subscribes to: /appliance/24110618749011601203c4e7ae0f1948/subscribe           │
└─────────────┴───────────────────────────────────────────────────────────────────────────────┘

But when I try to set it up I get:

$ ./meross-setup --gateway 10.10.10.1 --wifi-ssid ABC --wifi-pass pswd --mqtt mqtt://core-mosquito:8183
Setting up device with IP 10.10.10.1
┌────────────────────────────────────────────────┬────────────────────────────────────────────┐
│Primary MQTT broker                             │core-mosquito:8183                          │
├────────────────────────────────────────────────┼────────────────────────────────────────────┤
│Failover MQTT broker                            │core-mosquito:8183                          │
└────────────────────────────────────────────────┴────────────────────────────────────────────┘
Error Unable to connect to device
Are you connected to the device's Access Point?

I then checked my first thermostat, the one that I had configured without any issue:

$ ./meross-info -g 192.168.4.25
Getting info about device with IP 192.168.4.25
┌────────────────────┬────────────────────────────────────────────────────────────────────────┐
│Device              │mts200 eu rtl8710cm (hardware:7.0.0 firmware:7.6.4)                     │
├────────────────────┼────────────────────────────────────────────────────────────────────────┤
│UUID                │xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx                                        │
├────────────────────┼────────────────────────────────────────────────────────────────────────┤
│Mac address         │48:e1:e9:a9:a0:18                                                       │
├────────────────────┼────────────────────────────────────────────────────────────────────────┤
│IP address          │192.168.4.25                                                            │
├────────────────────┼────────────────────────────────────────────────────────────────────────┤
│Current MQTT broker │core-mosquito:8183                                                      │
├────────────────────┼────────────────────────────────────────────────────────────────────────┤
│Credentials         │User: 48:e1:e9:a9:a0:18                                                 │
│                    │Password: xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx                            │
├────────────────────┼────────────────────────────────────────────────────────────────────────┤
│MQTT topics         │Publishes to: /appliance/2209284982828160120348e1e9a9a018/publish       │
│                    │Subscribes to: /appliance/2209284982828160120348e1e9a9a018/subscribe    │
└────────────────────┴────────────────────────────────────────────────────────────────────────┘

So, it seems that there's a newer firmware version in my latest thermostat which introduces some breaking change? How can I debug this further?