Sensor data from HA is not received in ESPHome

That’s an encouraging error.

Sounds like that’s an encryption error bad_indicator errorno=11

You need to remove & add back the ESP node to HA since you used the same node which had an encryption key originally set up. Making some assumptions here.

I think your issue is duplicate:

Still have other ideas if that doesn’t solve it.
Such as extracting it within ESPHome instead, and trying a different, simpler sensor.

sensor:
  - platform: homeassistant
    id: current_temperature
    entity_id: climate.air_conditioner
    attribute: current_temperature