@terziyski thank you for your answer, I didn't notice that my firmware wasn't up to date. however, I updated it and my problem has not been solved yet, my AP still doesn't connect with the internet....

I tried to set it up as an access point, I ran the diagnostics and it said that the device (archer c64) connect to to the internet. Yes, my cables work, yes, I pluged it to the WAN port in Archer and...