WotLK Bugged achievement [Glory of the Raider], no mount

[Gilee]

Proof:
https://prnt.sc/dlAdJQfSVvnS

As you can see, it says that I got the achievement in 2024 and that is just not possible.
On the other hand here is screenshot of the achievement that I got few minutes ago and there is correct date:
https://prnt.sc/gKjFSf6-jawF
Since "I got achievement long time ago" I didn't get mount in mailbox.
Please, please, please help.

https://prnt.sc/dlAdJQfSVvnShttps://...c/gKjFSf6-jawF

Realm name: Onyxia
Bugged character: Gile

[Mitzen]

https://www.warmane.com/bugtracker/report/132181
"They will be awarded for those who complete the Glory of the Raider achievements in phase 1" -Overthink