# Fix a problem — PPTControl

Original guide: https://pptcontrol.app/Help?topic=problems

## Fix a problem

Find the next step for what went wrong.

- [The desktop app has no window](https://pptcontrol.app/Help.md?guide=desktop-icon): Find the icon in the Mac menu bar or beside the Windows clock.
- [My computer does not appear](https://pptcontrol.app/Help.md?guide=computer-not-found): Check the apps and Bluetooth, or connect with a QR code.
- [Stuck on “Connecting”](https://pptcontrol.app/Help.md?guide=connecting): Check the approval request, then Wi-Fi or Bluetooth.
- [The QR code does not connect](https://pptcontrol.app/Help.md?guide=qr-code): Fix missing codes, camera access, network addresses, and browser links.
- [“Bluetooth LE Peripheral Role” is not supported](https://pptcontrol.app/Help.md?guide=bluetooth-unavailable): You can still connect with Wi-Fi or a hotspot.
- [The connection drops or used to work](https://pptcontrol.app/Help.md?guide=connection-drops): Check sleep, network changes, and app versions.
- [Connected, but slides do not change](https://pptcontrol.app/Help.md?guide=no-control): Check the presentation app, slideshow, and permissions.
- [Notes show the wrong slide](https://pptcontrol.app/Help.md?guide=notes-out-of-sync): Update the apps and reconnect to your presentation.