Thanks for that. All sorted already though: I've been at the phone with AC (30 min wait - 15 mins talk ) and they changed with a solution that makes me wake up veeeeery early in the morning, divided in three legs but at least no overnight stops in vancouver. (and also more expensive than the one I choose anyway, of course didn't pay any difference at least)
I was expecting no change on the flights and a hotel night and/or a category upgrade but clearly I've seen too many tiktokers giving away wrong information ahahahahah