@Kevin_Z Thank you very much. This is very helpful. Will double NAT cause problems even though I don't have devices directly connected to the ISP router? All devices are connected (via cable or...

@Kevin_Z I have two Archers C80 V1 with new firmware (ArcherC80V122121266258n). I currently have a router from my ISP (with DHCP active and wi-fi disabled) and one C80 router in AP mode close to it...