I am having the same issue as all above.
On my PS, I bought the $100USD version, had no issues even linking to The Show site. Added XB today via Game Pass, it wiped all my PS stuff. I don't see the "Unlink" on PS, only "Link" through profile. When I try to unlink through the Show site, it logs me out and when I log in, it still has both linked. I have tried closing browsers, linking what turned out to be two sets of saves (WTF!) and it says it cannot link because they are the same.