TPLINK support contacted me to test with an alternative firmware. The problem appears to be related to the DECO X50 V.1. I'm writing below the test I performed today and will update you after...

@MeOverHere This morning, the DECO X50 called "extra" is offline again after a scheduled reboot that occurred overnight. The other DECOs connected via Wi-Fi are working properly, as are the two DECO...

I ran other tests without solving the problem. In the end, I tried setting an X50 as the primary unit instead of the BE25. After doing this, everything worked normally again, even after several test...

I have a similar problem. Main BE25 deco, then another BE25, three XE75, and two X50. Yesterday, both X50 were offline (flashing red light). Unable to reconnect. After resetting and reconfiguring...

No solution from device logs and apps logs The only way to solve issue was restoring Cam to factory defaults thanks a lot!

@Solla-topee Hi!!! I just sent you two email with object "Forum ID 852310" Thanks a lot!!!!