It seems some users install the app using one Apple ID and then try to restore using the Apple ID used to purchase ScoreCam features. Here are the steps which will allow you to restore your purchase on multiple devices:
- Remove the ScoreCam app (do this in case you installed the app using a different Apple ID)
- Verify you are using the Apple ID you used to purchase the app: Settings->iTunes & App Stores
- Install ScoreCam from the App Store
- Open ScoreCam and go to Settings->Purchase (w/ Free Trial) or Restore (may take a minute or so to show something so be patient)
- Tap the 'Restore' button (may not even need to do this step).
Also, see this link: https://scorecam.pydmsw.com/faq/index.php?action=artikel&cat=2&id=4&artlang=enTags: Apple ID, features, in-app, restore