Cannot ride my tiger! Already learned!

I already paid my riding skill fee, but cannot find the skill icon in my skill book.
I can neither use the tiger directly. It keeps saying I do not have the riding skill.
Any one can help?

I can ever repay it , but the trainer said I already learned it.

Hunter ID: Zeelong

Are you sure you bought this skill? Tiger Riding - Skill - Classic World of Warcraft
Make sure to delete your WTF WTD folders while your game is closed too.

Yes´╝îalready bought the Tiger Riding Skill
I also tried clean client reboot, never work for me

Never mind
Works now!

My one still not work
What did you do for that

Change another PC and works