[hornychz]

It's for connection but the 2 point led on display are RED. Webserver is available.

The router is quite permissive and does not block anything. I use fixed IP for the configuration of the devices, this avoids me to search their address every time, also convenient for IP cameras.

Hi,

I think you have too poor signal level: -70 dB is too low for stabil connection. Your mobile has longer
antennas, it's reason it can connect but ESP not ...
I should to come closer to AP or tilt AP antennas or use another AP.
I recommend you to narrow band to 20 MHz too, it would has a liitle better signal.

Good luck