Issue with Xbox Remote Play - Lemmy.world

I have an issue with Xbox Remote Play on my Series S. Every time I try to connect to my console outside my home network, I get a connection error where my console is found, but my mobile device can’t connect to it. I tried everything. I used several guides and opened all necessary ports in my router. While my Xbox gives me a go to use Remote Play, I still get the error. I even tried using a wired connection instead and also turned off private relay, but it still doesn’t work. Connecting inside my home network works absolutely fine. Does anyone know a solution for that or am I screwed?