IPv6 on FG-80F 7.2.0

Can someone please help me get IPv6 configured?

I'm on Xfinity and previously had OpenWRT configured with ::/60 prefix but having difficult time with 80F running 7.2.0 getting IPv6 address

No matter what I do, the GUI does not record DHCPv6 prefix hint.

What am I missing?

config system interface     edit "wan1"         set vdom "root"         set mode dhcp         set allowaccess https         set ident-accept enable         set type physical         set role wan         set snmp-index 1         config ipv6             set ip6-mode dhcp             set dhcp6-prefix-delegation enable             set ip6-dns-server-override disable             config dhcp6-iapd-list                 edit 5                     set prefix-hint ::/56                 next             end         end         set dns-server-override disable     next end

(ipv6) # get ip6-mode            : dhcp  nd-mode             : basic  ip6-address         : 2001:558:6030:7a:ccb4:xxxx:xxxx:xxxx/128 ip6-allowaccess     :  icmp6-send-redirect : enable  ra-send-mtu         : enable  ip6-reachable-time  : 0 ip6-retrans-time    : 0 ip6-hop-limit       : 0 dhcp6-prefix-delegation: enable delegated-prefix iaid 5     : 2601:586:c400:5240::/60 preferred-life-time         : 5850 valid-life-time     : 5850 delegated-DNS1      : :: delegated-DNS2      : :: delegated-domain          :  cli-conn6-status    : 2 vrrp-virtual-mac6   : disable  vrip6_link_local    : :: ip6-dns-server-override: disable Acquired DNS1       : :: Acquired DNS2       : :: dhcp6-iapd-list:     == [ 5 ]     iaid:     5       prefix-hint: ::/56           prefix-hint-plt: 604800           prefix-hint-vlt: 2592000