The app doesn’t work on the new Homey Pro 2023 for anyone. Athom has problems with BLE and the new hardware. If you go to Homey Developer Tools and press the Discover Devices button you should see your Plejd devices as P mesh in the result list. This works great on the old Homey but not on the new one.
The problem with BLE is reported here: Homey Pro — Early Access Status | Homey Athom is working on fixing it.
Here you can follow whats fixed/changed in Homey: Homey Pro (Early 2023) Changelog | Homey
