Ubisoft+ account linking

Hi there, I'm in want of help. I by chance began typing within the particulars of an previous account I had for ubisoft. Now I'm caught on this web page, it gained't let me return and kind in new particulars, I can't full the hyperlink and attempting to click on on the change linked account simply tries to make me change from my regular Ubisoft account to this older one. I'm really going insane attempting to determine the best way to clear up this and Xbox and Ubisoft assist simply appear to be ineffective in serving to me. Please any assist can be massively appreciated!