Hi there. I have 5 sonoff mini l2.
The first I bought was working well until a few days ago when it stopped working.
I opened the plug I and I saw it flashing (and I read it means it had a miscommunication problem).
I removed it from my platform and I tried to reconnect it.
It worked, it did reconnect, but still wasn’t working on my switch at all.
I removed it again and now the “add device” does t even find it when I try to pair it.
2 of the other mini l2 are working just fine and I kind of have up on that one.
One couldn’t connect from the beginning.
One stopped today as well and has the same problem of the first one.
I’m sorry if I don’t use technical language and also I’m not English so… 
I hope you got my problem.
Suggestions?