IPv6 Configuration on pfSense for LAN

I am looking for an experienced network administrator with expertise in pfSense to help configure IPv6 connectivity on my pfSense router. My ISP provides a static IPv6 address, but I am having trouble getting my LAN devices to connect to the internet using IPv6.

Current Setup:
pfSense Version: 2.7.2
WAN IPv6 Address: 2407:6400:5000::5/64
WAN IPv6 Gateway: 2407:6400:5000::1
LAN IPv6 Address: 2407:6400:5000:5::1/64

Issues:
LAN devices receive IPv6 addresses via DHCPv6, but cannot access the internet.
IPv6 connectivity to external sites (e.g., google.com) fails.

Tasks:
-Verify and correct the IPv6 configuration on both WAN and LAN interfaces.
-Ensure proper IPv6 routing from LAN to WAN.
-Configure firewall rules to allow IPv6 traffic from LAN to WAN.
-Set up DHCPv6 and Router Advertisements (RA) for LAN devices.
-Troubleshoot and resolve any connectivity issues.
-Optionally, configure a 6rd or 6to4 tunnel if native IPv6 configuration does not work.

Requirements:
-Proven experience with pfSense and IPv6 configuration.
-Ability to work with static IPv6 addresses.
-Familiarity with configuring DHCPv6, RA, and firewall rules on pfSense.
-Strong troubleshooting skills to identify and resolve network issues.