[Solved] Openbeken BK7231N Chip: Smart Switch WiFi Connection Failure - SSID and Password Correct

it is important to make sure that the wifi network is 2.4GHz in 5GHz it does not work

Hmm, I must admit, it's a very good and basic point, that I totally forgot to bring up here. Even Tuya product sellers remind about it repeatedly.

@btmerz , is your WiFi 2.4GHz?

It can also pass the complexity of the password if it is very difficult with many characters it can also fail
I have ever had to create a user for Wi-Fi guests on the router to be able to connect a device, also the operating system of the phone if it is iOS or Android

>>20587973
Yes, I used a 2.4 GHz Wi-Fi.
And as I mentioned in my first post, I already was able to successfully connect another similar module to my Wi-Fi.

@btmerz does it work if you try to move the problematic module next to your router? Very, very close?

I apologize, as of today, I have no other ideas what might be wrong. Maybe there is some kind of advanced tool around for router to analyze the WPA packets or something, that could help, theoretically...

EDIT: which channel is your WiFi on? Have you tried changing WiFi channel?

Hello all,
meanwhile I'm happy to announce, that I was able to get all my devices to connect to my wifi.
The problem was in my WiFi Mesh. I had three Fritz boxes in a mesh. But somehow there was something mixed up somehow.
So I resetted all my Repeaters and connected the new to the mesh.
Now it is working. Why I had no problem with my ESPs and Tasmota, I don't know.
But the main thing is that it is working now.

Thanks to all for your great support.
Now I only have to figure out my pin connection for the switches, relays LEDs and Power sensor on my aubess mini power monitor switch.
Do you have some examples here?

Hinzugefügt nach 57 [Minuten]:

I got the Switches and BL0942 Power sensor to work!
Thanks again!

I had some problems with my wifi mesh setup of my three Fritz-Boxes.
I set up the mesh new and now all works as expected.
Thanks all for the support.
Bernd