Fortnite account on 2 devices use 2.0?

So, again the question but changed a bit, I wanted to connect my PC acc with my xbox acc to gamble on both with my epic games acc, but then epic shows me that I've already linked an acc although this is not the case only have the one epic games acc, Help

Go to this link. There you can see which accounts are connected with what.

https://www.epicgames.com/.../connected