Actually, you could go to
Login with the same login name and password that you use to open Zwift application
It will tell you what it has in the system about your trial and your membership - perhaps it will help to understand why it shows that you have only 25 km left.
CORRECTION
Oh… Did you say iPAD? Did you also mean to say applePAY?
Then this is for you - it has your answer! Apple owners get a special treatment - there is one more button to press.
Cool people use a PC and do not use applePay 