Why in the world don't you have a 'Cancel Subscription' button somewhere in the account settings next to the Plan we're using???

I want to cancel my subscription but I can't find it anywhere. I searched in Google and I found a link where I need to enter the email I've purchased the subscription and then to receive an email with a link (Update info/view purchase history) where I can actually cancel my subscription.

I received the email, clicked the link and... "This page isn’t working - checkout.designrr.io didn’t send any data."......... (Smily emoji with a tear)...

Why are you making things so complicated for us?

There should be a 'Cancel Subscription' button, right next to the subscription plan and we (the users) should be able to cancel it whenever we want to! You know, like every other normal platform...