Archer AX6000(us),  Fios fiber, eathernet connection no modem.

last Monday (22, April) internet connection was unstable then went down.  Indicator light is blue but no internet traffic is passing.  Verizon claims no problem on there end.  I get an internet connection when plugged directly into the Verizon OTM.  Assumed it was the router so I replaced it with a new one.  Same problem.  Got Verizon to change the OTM same problem. Replaced the router with a Verizon router no problems.  Reconnected the Archer AX6000 connects for about 15 minutes then traffic stops passing light is still blue. Released DHCP reconnect backup for another 15 minutes then fail again.  Prefer not to stay on Verizon router it has no features.