@molt @kemes @mellwoman @marieper FYI, initial ZGP (Zigbee Green Power) support has very recently been added to zigpy (the Zigbee stack library that the ZHA integration depends on), as is as recently as only in Home Assistant 2023.7 release (and later), so there is at least a chance now that ZHA and zha-device-handlers (zha-quirks) developers could add handler/converter code to support a ZHA Device Handler (ZHA quirk) for individual ZGP devices, (though the ZHA integration code might still need some new additions too). I would suggest try to post more feedback to that existing device support request and wait to see if ZHA/zigpy developers are interested at looking at it, perhaps together with developers there you can resolve the missing pieces for that device (but be aware that could be that they will need to have that specific device themself to develop support for it). That is, post your setup, logs and troubleshooting steps here (again, you need to be using Home Assistant 2023.7 release or later) → [Device Support Request] SR-ZG2833PAC-FOH (Zigbee Push-Button Coupler) · Issue #2426 · zigpy/zha-device-handlers · GitHub
Also see discussion → ZHA integration support for ZGP (Zigbee Green Power) devices via zigpy?
For some basic information on why is ZHA Device Handlers (ZHA quirks) are needed read → https://www.home-assistant.io/integrations/zha#how-to-add-support-for-new-and-unsupported-devices (as well as the related information here → https://www.home-assistant.io/integrations/zha#knowing-which-devices-are-supported)