I have the same problem, all my sonoff devices are online except the TH16 which does not connect via the Zyxel VMG8825 router. If I use a Fritz 3272 router the TH16 connects to the server and works properly.
Hi All, after 2 months of using sonof products I am facing the same problem :( Does anybody got an answer from support guys?
Same problem here. After a few months my SonoffTH16 stopped answering to ping and now i can't get it into flash mode anymore.
PS i have another TH10 and no problems with that so far.
That means the TH16 is piece of shit?
I'm trying to install TH16. It worked until this morning but fell out of the system. I threw it out of the application and I'm trying to install it again. It's not working. I've moved the wifi router to 2.4 GHz and still nothing. I don't know how to solve this, but I can see I'm not alone.