Hi there! I understand you're having trouble connecting your device to the VitaDock+ app on your Android 9 WebKit browser. Let's get this sorted out together.

First, could you please tell me more about the device you're trying to connect? Is it a scale, blood pressure monitor, or another Medisana device? Also, is the app showing any specific error message when trying to connect?

Meanwhile, here are some initial steps you can try to resolve connection issues:

1. Bluetooth Activation: Make sure Bluetooth is turned on your Android device. Go to Settings > Bluetooth and verify it's active.

2. Device Proximity: Ensure the Medisana device is switched on and close to your smartphone — typically within a few meters.

3. Restart App and Device: Close the VitaDock+ app completely and reopen it. Also, power off and on your Medisana device.

4. App Update: Check if you have the latest version of VitaDock+ installed from the Google Play Store. An outdated app can cause connectivity problems.

5. Clear App Cache: Go to Settings > Apps > VitaDock+ > Storage > Clear Cache, then try connecting again.

6. Pairing Process: If your device requires manual pairing, make sure it is done through Bluetooth settings before opening the VitaDock+ app.

If you've tried these and still can't connect, let me know what messages you see or steps you've already taken, so I can guide you further.

Just so you know, connectivity generally depends on proper Bluetooth activation and keeping devices within range1.

Are you comfortable trying these steps? Let me know how it goes!