how to cancel subscription for instasize

Hello, I can’t cancel my subscription for instasize. I already canceled other subscriptions but this time there is no button that allows me to do so for instasize.

I only see different packages to chose from. However, I can’t scroll down to select a button “cancel subscription”. This is what happens to more users - but no solution found yet. Seems it’s on purpose that one can’t scroll down :( makes me so angry spending so much time on that without finding a solution. And users report that it renews monthly or even turns into a yearly subscription. Unbelievable Apple allows such apps :(