My 6hz band and ipv6 problems with the cannot reach website. cr1000a

I have problems with my 6hz band with router cr1000a the problem its doubles its name of the wifi i think it needs an update the router.

The other problem is ipv6 is on and works normal and gives ipv6 to devices and everything like normal but when i go to ipv6 only website or needed or if i go test my ipv6 its says the time limit reached and i go to a page of ipv6 only is says can be reached and passes the limit time even in my phone.

I think the router needs an update for ipv6 and 6ghz band.

I need too a verizon support response and to solve the problem.