I bought the premium app for iOS to be able to sign and convert documents.
only thing is; it doesn't work!
Now I would really like a refund, S I did the work on a computer instead (as it had to be done yesterday), but Apple won't let me do that either even though the purchase didn't give me the functions promised!
As you wish to cancel your service that you have pruchased from Apple, you will need to contact their support team.
There is nothing that can be done from our end.
If you have purchased the service from Adobe Store, you can cancel the subscription from here https://helpx.adobe.com/in/manage-account/using/cancel-subscription.html
Also, please check the refund policy provided in the help document.
Let us know if you have any questions.