Macbook pro 2018 Catalina sidecar problem in connecting to iPad pro 11 through Bluetooth

Good morning ShahramSadeghi,

Thanks for reaching back out and testing the Bluetooth connection on the Mac. Go ahead and try toggling Handoff off for both devices, and then back on. The steps to do this are below, but if you'd like more information here's a link: Use Handoff to continue a task on your other devices - Apple Support

Mac: Click the Apple menu > System Preferences, then click General. Uncheck "Allow Handoff between this Mac and your iCloud devices."

iPad: Go to Settings > General > Handoff, then turn off Handoff

Once turned off, go back and turn this feature on for each device. Do this same process for Bluetooth. If you're not sure how to turn Bluetooth off for each device, the steps are below:

Mac: Apple menu > System Preferences > Bluetooth > Turn Bluetooth Off

iPad: Settings > Bluetooth

Once Bluetooth is off for both devices, go back and turn these on. After completing these steps, test Sidecar and let us know if you're still having trouble.

Have a great day!

Hey ShahramSadeghi,

I see that you're having some trouble with Sidecar when you attempt to connect via Bluetooth. I'll be happy to help out.

Be sure that there isn't any potential interference that could be affecting the connection: Potential sources of Wi-Fi and Bluetooth interference. If after going through that resource, you're still unable to resolve the issue, try connecting another Bluetooth device to see if it connects. This will help isolate the issue.

Keep us updated. Take care!