Ulysses seems to have failed to restore your existing subscription. You might be seeing this error for multiple reasons.

First off, please make sure that

• you are logged in the with the same Apple ID that you used to purchase the subscription 
• your Ulysses subscription is still active

You can check both in the Subscriptions page of your account:

https://apple.co/2Th4vqI

If you have a student subscription, please have a look at the following page instead:

https://finance-app.itunes.apple.com/purchases

Please note that you'll only be able to restore your subscription on the device on which you purchased it, for example, if you purchased your subscription on macOS, you need to restore it on macOS.

If you are using Ulysses on multiple devices, please make sure iCloud is enabled on all devices and that you are logged in with the same iCloud account (not necessarily identical to your Apple ID). Additionally, iCloud Drive must be enabled on your device. On Mac, open System Preferences, click “iCloud,” and make sure iCloud Drive is ticked. Furthermore, “Ulysses” must be checked under “Options…”. On iOS, open the Settings app, tap *your account name* › “iCloud,” and ensure both iCloud Drive and Ulysses are enabled. Only if iCloud is set up correctly, will the subscription sync successfully to the other devices.

Should you still experience problems with your subscription, please don’t hesitate to contact us – we are always happy to help!