Things you can do:
- Replace the power unit by a decent one, 5V 2A (or up); I’d replace the cord as well.
(The original power unit is known for deteriorating in time) - Reinstall Homey software, this solved the weirdest zigbee issues;
It’s called “Download full software update”.
Howto: [HowTo][Pro] Restarting Homey Pro to Recovery Mode - Adv. Options From Mobile
While it shouldn’t affect anything, I recommend to have a recent backup at hand.
- Other hints and useful info: Advanced Zigbee Troubleshooting on Homey