This app has no customer service. I got an error when paying for it and the "help" page only had two things: two links leading to unrelated troubleshooting pages, and a website that does the same things the app does but doesn't seem to even be connected to the app. Don't bother with this app, just get Busuu or something else that has some kind of actual customer service. Immediately uninstalling after this disappointing and frustrating experience.