Hi! I understand you're having trouble with Cantook Cloud not syncing your books properly so you can access them on multiple devices. To help you better, could you tell me a bit more? For example:

- Are you signed in with the same Cantook account on all your devices?
- Is this happening with all your books or just certain ones?
- Have you noticed any error messages when syncing?
- Have you tried any troubleshooting steps so far?

This info will help me guide you efficiently.

Meanwhile, here are some basic troubleshooting steps you can attempt on your Android 15 device:

1. Make sure you are logged into the same Cantook account on each device. Syncing requires the same account to see your purchases and downloads across devices.
2. Check that your internet connection is stable. Syncing relies on connectivity.
3. Open the Cantook app, go to Settings, and look for an option like "Sync," "Sync Books," or "Migrating your books." Performing the migration or sync process can ensure your books appear across devices.
4. Make sure the app is updated to the latest version. Sometimes syncing issues are fixed by updates.
5. If you recently upgraded to Cantook version 4 on Android, there is a specific "Migrating your books" option in Settings you should follow. This migration process helps your books sync properly across devices.
6. Try logging out and back into the app to refresh your account sync.

If syncing still fails after these, let me know. We can then check deeper settings or if any digital rights management (DRM) locks on your books might limit multi-device sharing. Some eBooks have restrictions that limit the number of devices they can be accessed on.

Does this help so far? Are you able to try these steps and tell me what happens?

Cantook Cloud is not syncing books to allow access from multiple devices

Thanks for confirming the issue with Cantook Cloud not syncing books for multi-device access. Based on what I’ve found, here are some important points and steps you can try to resolve this:

1. Verify that you are logged into the same Cantook account on all your devices. Syncing only works properly under a single account.

2. Some eBooks are protected by digital locks (DRM), which limit the number of devices where the book can be accessed. So if the book has DRM restrictions, that might explain why it’s not syncing across your devices1.

3. If you upgraded the Cantook app recently (to version 4 on Android), you might need to perform a one-time "Migrating your books" process in Settings. This migration helps bring your existing books into the new system and sync them properly7.

4. Ensure you have a stable internet connection during syncing.

5. Try logging out and back into the app on your devices to refresh the sync.

6. Make sure your app is updated to the latest version from the Google Play Store.

If the problem persists, you might want to check whether there are any syncing error messages shown or if some specific books are the problem.

Would you be able to check these points? Let me know if you want me to guide you through the migration step or any other part.