Wireless door sensor stops responding

After setting up the wireless door sensor it works fine for about two days but after that it stops responding.
Only if I disconnect and reconnect the battery it works again. This happens on all wifi door sensors I have.
Model:DW2-wifi

No issue with the defined wifi network.

Any ideas

It’s wired that reconnects the battery can make it work again,:joy:
Have looped this issue to our support team for further digging, will back to you if we have some clue.

I have the same problem. Is there any solution for this problem?

For me it took 3 days. I had to connect new again.

Check whether the coating or outer layer of the battery is in contact with the metal clips, if so, it will cause the short-circuit of the battery and stop supplying power to the device and offline issue.