If you're using the iOS SDK, there's an important update to the build in regards to the sticker archives you should be aware of. Currently, the sticker archives in the iOS SDK are being stored in the Documents directory, which is backed up by iCloud, but as of late, Apple has begun to reject any apps storing things there that can be re-downloaded.
To solve this issue, we added an extra attribute to the sticker file to mark it as excluded from iCould backups.
Please see our release notes for more details:
Please download and update to the latest build to avoid any issues. You can grab it at aviary.com/ios.
If you have any questions, please feel free to send them to mobile@aviary.