Hi,
we have migrated our sensors from V3 to V4. After a couple of days some sensors just stopped working as they should, they are just trying to rejoin but nothing happens.
I tried to Flush OTAA but that did nothing. I tried multiple times.
Weirdly it is not happening for all sensors, only for some, unfortunately majority. For example, we have 2 same type of sensors, same gateway, same profile, same application, one is working fine, the other is in join loop. I can’t seem to see or find any errors or I might be looking in wrong logs. In Events I just see “join” and in “LoRaWAN frames” just “JoinRequest”.
Since sensors are in remote locations we can’t easily get to them to try to manually reset them.
Where should I dig deeper or what else to check?