Hello Jay_ipad2004,
Thank you for posting to Apple Support Communities.
We understand you're missing data that you believe was backed up in iCloud. If you created a backup before this data was missing, did you try to restore from that iCloud backup to see if the files were there?
Restore your iPhone, iPad, or iPod touch from a backup - Apple Support
If the data was synced to iCloud, make sure that you've enabled iCloud sync for the app: Change which apps sync and store data with iCloud - Apple Support
If you're still having trouble, we recommend contacting the developer of the app: How to contact an app developer - Apple Support
We trust that helps.
Take care.