Is it possible when the low battery warnings came, either your confused ,cor you damaged something each time you open a sensor or you need a system restart
Very common for customers to get confused with what is going on, swapping batteries round and then end up going in circles only to find a problem again
Your answer will be interesting, it is possible to get a wireless sensor have a fault of low battery even though you changed the battery , if the sensor is in the same location as last one that went faulty then perhaps something makes it have a fault overtime , water ingress
I can't blag much more but all possible