You can cancel your subscription at any time. Go to the top of Photo AI when you are logged in, tap the logo and in the drop down tap Billing, you will be redirected to Stripe's billing portal where you can download invoices, switch plans and cancel your subscription.

If you are not logged in, first login: go to the top of Photo AI's frontpage and enter your email in the email box, click the button to continue. Follow the link in the email you got, tap the logo and in the dropdown tap Billing in the top right of that page.

If you can not login, no worry: click Billing on the top of Photo AI's frontpage and enter the email you signed up with on Stripe's billing portal. Stripe will send you an email to login and then you can download invoices, switch plans and cancel your subscription there.

If you signed up on the Photo AI iOS app, you can manage your subscriptions with Apple.