Turn on your internet connection and try again. If it still fails, open the app's 'My Benefits' page, check the online-content link in the Settings section and tap 'Check now'. Once downloaded, a book reads fully offline.

When a new edition arrives, an 'Update' button appears on the book's card — one tap refreshes it. Content such as books, articles and tips updates itself from the server; you never need to reinstall the app for content.

Your device code is shown on the Premium page. After payment through the designated channel, send the device code on WhatsApp to receive your activation code — enter it on the Premium page and Premium switches on. The code works only on your phone.

Everything, including the Case Register, stays only on your phone — nothing goes to any server. Before changing phones, take an encrypted backup from Settings and restore it on the new phone. Uninstalling the app erases on-device data, so always back up first.

Restart the phone once, keep enough free space, and use the latest version. If the problem stays, tell us through any channel below — saying which page and what you were doing helps us fix it fast.