I can't redeem student discount with my confirmed account what should I do?

[#1]

I've received an email that says my student ID has been confirmed. Still, when I try to switch my existing family plan (I'm the manager) to my student plan I simply can't and a message something like "you are not eligible for this plan, try another premium plans" appears (I translated from my native language, not sure what it is in English).

[Joan]

Hi there,

Thanks for reaching out. Sometimes changing from a Family plan to Student directly isn't possible. Try cancelling your existing Family subscription, waiting for your account to revert to free and then resubscribing for Student.

Hope this helps.