The provider is the ISP I am working at. We have full control. We own the IP space and it is giving me a functioning IPv6 /128. As stated the exact profile as I pasted it into the MV1000W will perform as normal if I plug it into Windows Wireguard client or import to Android.
I have VPN killswitch feature turned on. For testing I will factory reset, turn on IPv6, reimport the profile and not turn on the killswitch just to see if it will work. Might also try IPv6 only profile. Will report back.