Devices unavailable after power outage

What is the suggested way to recover from a power outage? After a power outage, several devices show up as “unavailable” for me. Specifically it’s an Eufy Homebase 2 and a Plugwise thermostat and temperature sensors. These devices are working fine otherwise and reachable though their own apps. I can not find any option in Homey to reconnect to the devices.

The ip address of the Homebase probably changed after restart of your wifi router, so Homey cannot find it anymore. So what you need to do is set a permanent ip address od the homebase in you router.
I’m not familiar with plugwise equipment, but if those are wifi devices, the reason will be the same.