Student discount not applying?

Hello! My old credit card expired recently, and of course I got the notification to update the payment method or my plan would cancel. When I went to update the information I saw that it said that the next payment would be 79€, which is the normal individual plan price here in Spain. I re-applied for the student discount as it had also finished and it got updated and accepted, but the price stayed the same and I don’t want to update the card information because 79€/month is quite a lot for me right now. What can I do? Do I need to just let it cancel itself and buy it again? Or just wait a couple more days for the discount  to show up? 

Theoretically my student discount is already accepted but I don’t know why it doesn’t show in the price.