I had two L530E bulbs in my setup via the Android TAPO app.  This AM, BOTH of the devices were off-line and I could not get them back on-line.

Background:  Devices have been installed for several months without issue.  I actually rarely use these two devices, but when needed, I like the automation. 

Router is a ASUS AI Mesh System with a single mesh.  No changes made to router in last several months.  One symptom is both devices are popping in and out of the router's active list (mostly out).  I tried relocating the devices closer to my router - no change in performance.

I then deleted the devices from the Tapo integration (only option available), RESET the devices (both), and then tried a reinstall.  The installation appears to work until it gets to the PAIRING screen, where it hangs and then gives the standard problem resolution screen.