Good afternoon @OneU! Welcome to the community!
Do you still need help?
I tried to search some informations in order to help you, but as I’m not an expert I’m not sure if it will work and help a lot.
Do you check if it is not a trouble with the IPv4 or/and IPv6? Problem with the DMZ? Bridge Mode?
As I said, I’m not an expert. If someone with a better knowledge can help you, it would be great 🙂