I don’t trust those plans - it’s easy to forget to cancel it, and most products are simply hoping that you will forget. If I actually think I will want to cancel it, I will not sign up for services with this pattern. It’s a simple rule that saves a lot of mental overhead.
That is not the case with MA they will refund you with a click of a button and it will cost them money since stripe keep their cut and don’t refund it to MA.
https://www.mathacademy.com/terms-of-service#cancellation
It's what I did 10 days ago before deciding to try it out