Rivern Frostwind (Winterspring Trainers) Faction change issue

Rivern Frostwind will not interact with me because I changed faction from Horde to Alliance, so I cannot take quests to start rep grind.
Could any GM please add a 1000 rep to my character to balance it to be like the rest of the alliance players so I could speak with this NPC?
I don't feel like I am requesting something that is unfair to other players, Original Alliance players all start with the ability to speak with him. Why can't I have it? I don't understand why the in-game GMs wont solve this for me and refer me to the bug tracker.

This issue is mentioned here:
https://github.com/TrinityCore/TrinityCore/issues/16761
and the suggested solution is this mod command:
.mod rep 589 1000

This bug has been reported in the warmane bug tracker multiple times and it has been a year since with no updates addressing this.
https://www.warmane.com/bugtracker/report/10775
https://www.warmane.com/bugtracker?f...B%5D=&t=Rivern



Please help me!

It has been 6 days with no reply so I am bumpig this thread up. Hopefully this time I'll get some attention.

I discovered another issue that seems to have been caused by my faction change, Now my alchemy specialization doesn't show in my skills widow (K by default) so I can't unlearn it to switch specialization. The in-game support GM suggested to delete my cache but it didn't help.