Hello Johan
Method 1
- Turn on your Bluetooth.
- Go to Settings.
- Touch Bluetooth.
- Touch the action button top right of your phone screen for more options.
- Touch Visibility timeout and set it to never time out.
- Try it again.
- if still nothing please see method 2 below
Method 2: Reset Bluetooth to factory default.
- Go to Settings.
- Apps.
- Go to All .
- Touch Bluetooth.
- Touch Clear data.
- Go back to all apps.
- Touch Bluetooth share.
- Touch clear data.
- Reboot/Restart your phone/tablet.
And then repeat method 1 again.