Hi,

I have an Archer C2 router I use as Access Point.

I will soon need to provide an access to the internet to an external device and I am asked to give the password so I want to setup a guest access to the Wi-Fi and internet.

The problem is it doesn't even connect. The SSID is present in the Wi-Fi Hotspots, the signal is excellent. I did put the correct password but no luck. It looks like nothing happens but from another device I at least see it tries to connect but seems to be rejected immediately.
I tried to lookup the issue and in my kind of config it says "Allow Guests To Access My Local Network" should be ticked. This doesn't help. I even disabled and reenabled the guest network and rebooted the router with no effect. I disabled  the security making it an open hotspot. It does not connect.

I have absolutely no clue what's going on.

Can someone help?

Regards.