Hello directnupe,
first, as per guidelines, please refrain from signing your posts, we know who wrote each post.
Regarding @vgaetera's questions:
You have allowed forwarding in the firewall from wan to wireguard zone. What traffic do you expect to follow this flow and why allow everything and not drop everything and allow the specific flow?
Wireguard firewall zone is open to the internet. What is the logic of using the ACCEPT policy for the INPUT and FORWARD rules instead of the default REJECT or DROP?