Subscription cancellation

I want to cancel my subscription for the AI Assistant for Acrobat and Adobe Acrobat Pro as I don't want to be charged another month. However, as I try to complete the cancellation via the "Manage Plan", the page does not load. I have tried numerous times the last 3 days and every attempt was unsuccessful. Please cancel my subscription or indicate another working way. Today is my billing day and I don't want to be charged for another month.

Thank you, Katerina