Hi, can you send me screen of your settings, I’m in the same situation, so maybe I done as you have and it will work. please help me, my router is gl-ar750s and I use surfshark vpn with static ip as you, but still relayed. I think in advanced settings of router should be something which is different for me and you, maybe in the Network-Firewall-General or port forwards page, this two pages screen will be enough I think.
Thank you !!!