This line says that %shelly_topic% is equal with homeassistant which is not possible. It should be "shellyplus2pm-5443b23d7858/" I have a bad feeling that you changed your Shelly device prefix to homeassistant instead of a proper unique prefix... I restarted the configuration: I deleted the devices ...

Here are the Domotics logs for discovery if it helps. 2023-03-26 17:46:07 686 Error: MQTT Auto Discovery: MQTT_Discovery: Invalid/Unhandled data received! (Topic: homeassistant/cover/shellyplus2pm-5443b23d7858-roller-0/config, Message: {"name": "shellyplus2pm-5443b23d7858 Roller 0", "enabled_by ...

Plus 2PM is simple as it consists of 2 Input and 2 Switch device, so adding 1PM config and altering it is not a big deal. Although the Cover mode is a bit interesting and of course working otherwise than the old Shelly2... an experimantal example added the RPC payload has to work - in theory. I ...