Natanael

You need to set up a publicly accessible device (in this case the VPS) as your IPv6 gateway

So you set up your VPN connecting your network to the VPS (should probably be set up from the router) and set your router to advertise an IP adress for the VPS which is routable from your local network as the gateway address (and should probably also run DHCPv6 for your network)

(note, I have not set up this stuff myself so I can’t help with implementation details)

Robots can definitely flip burgers.

Some can even do it twice!

Exclusively using Discord as a support channel should get you banned from the internet

An application password, basically

Yup, it’s more like self administration or something like that

It definitely sounds like he has redundant routes (this literally shouldn’t be possible otherwise) so yeah, he needs to fix priority