Support

Last updated: August 2026

Have a question, a technical issue or spotted a possible content error? We are happy to help.

Account & progress

Tell us your platform and whether you study anonymously or with an account. Never send passwords or complete purchase receipts.

First use Restore purchases in the app. If that does not help, include the store, product and approximate purchase date.

The feedback action on a question sends its identifier together with your message.