Cannot activate code on iOS

Due to App Store regulations, code activation in the iOS app is not possible. You need to activate the code on the SuperMemo.com website and then log in with the same account in the iOS app.

Errors and issues

I did not receive an invoice for the purchase

Cannot click evaluation during learning

The answer key in the handbook does not match the exercises

Cannot activate code on iOS

I cannot download a PDF file

I cannot add a MemoCard

Problems with speech recognition feature

Error with iOS sound

Is there technical support for users?

Error with STT Android (old app) - "The app detects the wrong language in speech recognition, what to do?"

How to report an error or suggestion to the SuperMemo team?