Ah, well. It seems I made a mistake some time ago. I could swear I had linked my Kaynil Nintendo account to Ubisoft back on the WiiU. Then again on the switch while playing Just Dance 18. Then, I think a year ago, I ended up linking my secondary account. I think it was when I was setting my mobile as a possible controller where I ended using the wrong account.
Now, even if I unlinked it, Ubisoft is keeping the record in such a manner I can only link back to it and no other switch account.
I suppose they do that to avoid fraud and re-sell if accounts or something. I really made a big mistake linking it.
It'sjust a bummer because I bought Scott Pilgrim vs the World, and there's a mode called network and now I am afraid I can't play multiplayer online with my primary account.
I'm even considering deleting it and start over as a last resort. For now I used twitter to DM their support account.
But yeah, if you link, just make sure you got the right one, as you won't be able to change your mind.