Try again inhours. Once you've cancelled your subscription, you should see a message that Order cancellation is eligible in the firsthours of order placement via ‘cancel’ button available under: > My Account section> Orders. Hi! Welcome to the Smallpdf helpdesk! Account. How do I cancel my free trial or subscription to Smallpdf Pro? How do I change my login email or password? 3 months ago. And of course, you can also submit a support request or ask for a new feature! Don't see Cancel your plan?