[2023] There was a problem authenticating the ownership of this product. Please contact customer support if you need help solving this problem

Hey all, ive been having trouble with regards to logging into my ubisoft account on my new pc. I get an alert stating: "There was a problem authenticating the ownership of this product. Please contact customer support if you need help solving this problem". There's a few factors, 1. Im still linked to my PS4 account (with ubisoft) and im afraid if i unlink i could lose my account and progress of the game that i;ve played for around 6+ years now. I love this game and it was one of favourites growing up. 2. Could steam be bugging up? ive logged in and out of steam, deleted and reinstalled r6s and still having the same alert pop up. 3. It's been 4+ days and im losing my patience with the customer support. I completely understand that Ubisoft has hundreds of messages per day but im really getting agitated.
But if one of you guys reading this could help me it would literally mean so much to me/