POPP Z-Rain won't connect on Homey Pro (2023)

Hi everyone, I’m looking for some advice.

I’m using a POPP Z-Rain rain sensor that worked perfectly for a long time. I first used it with Homey 2019 and later with Homey Pro (2023) without any issues.

The same sensor worked correctly before on both Homey 2019 and Homey Pro (2023). The problem only started recently.

Recently, I haven’t been able to connect it anymore. The device is included successfully, but immediately afterwards it is shown as Offline / Unreachable and doesn’t communicate.

I’ve already tried:

  • removing and including the device again,
  • factory resetting the sensor,
  • replacing the batteries with new ones,
  • rebooting Homey,
  • removing the old Z-Wave node and creating a new one.

None of these steps helped. In Homey Developer Tools, the device is still shown as Offline / Unreachable, even though the inclusion process completes successfully. The Z-Wave route is direct to Homey, and there are no transmission errors.

I’m attaching a screenshot from Homey Developer Tools showing the device status after successful inclusion.

Has anyone experienced the same problem or found a solution? Is this possibly related to a recent Homey firmware update or the Z-Rain app?

Any advice or suggestions would be greatly appreciated.

Thank you!