I can't link my Fotolia account with my Adobe account
I've been a contributor to Fotolia since way back (2012 or something like that). I now can't access my profile or earnings, because when I try to log on to the Fotolia account, now Adobe Stock, it asks me to link it with my Adobe account. I then type in the password to my Adobe account, and receive the message: "The chosen account is already in use".
What do I do from here?