Mine isn't linking either. To be completely honest this is kind of disappointing and frustrating that I bought an unlimited pass and can't even play the songs that I'm supposed to be able to play after paying for an unlimited pass. Especially since this problem has (apparently) been going on for some time now.
I have the same problem on my switch. I just purchased this game and trying to have fun with my bf tonight, but I can't unlock the unlimited feature due to the ubisoft account issue. I can login perfectly on PC/phone, but just not the switch! It kinda ruined our night and disappointing us.
As a single mom of 5 I RARELY get time for myself nevermind decide to spend money on myself until tonight. I decided to buy just dance 2019 and unlimited dance only to spend my night troubleshooting it and STILL being unable to play. Even more upsetting was finding out ubisoft knew about this issue all along. I have now wasted the first free evening I have had in years as well as money that could have been spent elsewhere doing absolutely nothing but getting frustrated.
Just link another game??? I don't have another one nor do I have money to buy another game to get access to a game I have ALREADY BOUGHT. I sincerely hope ubisoft is going to credit our accounts back. I will never get my night back, but what do you care? You scammed enough money from the little people to be able to sleep at night.