Reputation bug after faction cahnge

I transfered my character from Alliance to Horde, some months later I transfered back to Alliance, only to find that the Pearlfin Jinyu reputattion is back at 0/3000 Neutral.
This article: https://eu.battle.net/support/en/article/000181427 states that it should have transferred as it was…
I can’t seem to start the Jinyu quests again, and both the lasts quest of the chain:
https://www.wowhead.com/quest=29906/carp-diem and the other (forum doesn’t allow me to post more than 2 links) are marked as completed by my character.
So has this happened to someone else and knows how to fix it? I tried contacting a GM online but that clearly didn’t work as I think I spoke to a machine that just responded random things… it even sent me a link to an article that I already had provided in my first response…