@piggo so I see you sorted the wg story. Congrats. Wireguard is a good tech, but as you pointed out yesterday, I also feel it's rough around the edges. BTW, you could have saved yourself some worries with OpenVPN alternative.
@piggo I know. I;ve been there. As for the portforward, depending on what system you are on there, the trickery is to make it bulletproof: should survive reboots and system upgrades.