I had the same problem yesterday!
I got another router and trying to connect my two S26 sockets to it. The application could not find anything!
Somewhere I read that they managed to do it by trying through another device (mobile, etc.).
I did it and it worked!
At first I tried unsuccessfully on my Xiaomi mobile and then it worked on my Samsung tablet!
I still do not know if this problem is due to the Xiaomi company or the SOnOff company.
ste murray
Installed a new router yesterday and now my three S26 will not connect via wifi.
They have paired and have the latest firmware but none of them will now connect to the new router? I have been through all the settings in the router but nothing?
I have deleted them and repaired. I have created new accounts and repaired with new email address but nothing will get them to reconnect to the new router wifi?