Hello,
I moved to FTTH recently. And now I have another router as my main router.

The VR2800 is repurposed as an AP and so far it seems that it's doing its job well. I still haven't check if it's using double NAT, although I doubt.

However, my main issue is that clients of the guest networks cannot access the Internet and this is a huge issue for me. How can I configure the Guest Networks to use a different subnet than the main Wifi networks? The main router allows me to use a different subnet/VLAN and obviously I want to use this functionality!