Problem with character boost and Dark Iron

I used the character boost I got with my purchase of shadowlands on a Dark Iron dwarf because of the new small questline coming out in 9.2.5.
It’s patch day and I just read that in order to start this new questline in 9.2.5, I would need to have first obtained the Dark Iron heritage armor.
The problem is that it is impossible to obtain the armor on a character that has been boosted.
This means I won’t be able to start either questline on this character until I level up another Dark Iron up to the same level this boosted one is.
Support is unable to cancel/refund the boost I used and has pointed me to this forum.