Aqara Temperature and Humidity Sensors

Should work according to the app store:

Did you try to “interview” the device?
Go to https://tools.developer.homey.app/tools/zigbee
Tap the 3 dots on the right of the device entry, and tap Interview. First ‘wake’ the device by pushing the pair button shortly, and during the interview, keep pushing it shortly every few seconds.
(the arrow indicates where you’d see the three dots)

If it doesn’t make a difference, and you removed all Ikea zigbee lamps: post your issue in the Aqara app topic, you’ll find the link on the app page at homey.app store.

I have solved the problem. If I took the battery out for about 30 seconds and put it back in, it started working.

I had the same problem.. Its easy resolved.. Just delete device in homey, take the battery out of the sensor, wait 30 sec en put it back. Then start pairing with the aqara app in homey.. Tadaaaa…