I recently signed up for this Student Club: https://www.qatarairways.com/en-hk/student-club.html

Sounds really good:
- 10,15 and 20% off first, second and third booking
- 10kg additional baggage
- free wifi

However, when I sign in and enter the promo-code I got, I just see a reduced fare, it still has the same baggage as usual (25, 30 and 35kg depending on fare class) as without.

Anyone tried this (or other additional baggage fares/promotions)? Wondering how to get the additional baggage, or if it will be just saved in the ticket and shouldn't cause a problem during check-in?