Welcome to this Forum Tommy!
Did you already execute a Cold Restart of your Homey?
˵damaged because of the power outage?˶ Could because of the age of you Homey, but not very likely.
Start recovery mode and select “Full software download” This installs the firmware from scratch, and solved many weird zigbee issues.
Also (temporary) replace the power brick with a decent one, 5VDC / 2Amps minimum.
Howto: