FaceTime does not sign me in on my MacBook Pro, whilst I use the FaceTime on my iPhones

Let's follow these steps from If FaceTime isn't working on your Mac

"If you can't sign in to FaceTime

• Make sure that you can sign in at appleid.apple.com. Learn what to do if you forgot your Apple ID or forgot your Apple ID password.
• Choose Apple () menu > System Preferences, then click Date & Time and select “Set date and time automatically”. Click Time Zone and make sure that the settings are correct. 
• Make sure that you've installed the latest software updates."

We hope this helps!

Hey NTanas,

It looks like you already checked out the right article for your issue. Did you also make sure that your MacBook Pro is running the latest software? Also, are you able to sign in through this website? One account for everything Apple.

If you've tried all those steps above, let us know what exactly happens when you attempt to use FaceTime through your Mac. Do you receive an error? If yes, what error do you get? The more information you can provide us, the better we can assist you.

Cheers!

Hello NTanas,

From the steps we've covered so far, we may suggest contacting Apple Support for additional help. You can use the Get Support link at the top right of this page, or use this link: Apple - Get Support

We wish you the best of luck!

Take care.