Best wifi temperature / hygrometer sensors? Aqara doesn't work anymore

Possibly not related to Aqara , but rather to your Zigbee network - not sure if you have HP23 or HP19 but there are many articles on stable Zigbee network. FYI, I was running about 70 Zigbee on HP19 and now as well on HP23 and didn’t have to repair any Aqara device unless I did something with Zigbee routers (eg. re-pairing them).

…maybe sell them ?

Anyway, I do have very good experience with Xiaomi Miija App for Homey | Homey

…but if your Zigbee is not stable not sure if Zigbee devices would be the good one.