The spinning circle usually means Scoreboard Remote is trying to connect but the connection stalled or was interrupted.

Try these steps in order:

1. Force-quit both apps — on each device, swipe up from the bottom (or double-press Home) to see the app switcher, then swipe the app away. Reopen both apps and try connecting again. This resolves the spinning circle in most cases.
2. Make sure Bluetooth is enabled on both devices — iOS Settings → Bluetooth → ON.
3. Check that the Remote button in ScoreCam is highlighted blue (advertising). Tap it if it is not highlighted.
4. Make sure both apps are on the latest version — check the App Store for updates.
5. As a last resort, uninstall both apps, restart both devices, and reinstall from the App Store.