Unable to discover OMG on Home assistant

Hey all, I’ve just managed to install OMG onto my esp8266 using "nodemcuv2-rf-firmware.bin. I followed the steps as written here, configured the wifi using the portal. However, I couldn’t get Home Assistant to auto discover the esp8266. I get this error in the notification tab: “Login attempt or request with invalid authentication from supervisor ( (Python/3.8 aiohttp/3.7.3)” whenever I restart esp8266. Anybody can guide me to the right direction?

Edit: The esp8266 is connected to my router and the error shown in the log off mqtt error is:
1609941323: New connection from 192.168.X.XXX on port 1883.
1609941323: Socket error on client , disconnecting.

Do you have several esp with OMG or only one ?

Try with a simple username and password also (less than 10 characters) and dont forget to create the user into home assistant.

Yes only one.

I have solved the problem. Turns out I didn’t configure my mqtt broker properly. It is showing up now. However, I got a feeling my rf433mhz receiver is faulty, because I’m not picking up anything when I press a button from my remote

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