Hi. I noticed you posted about this a couple weeks ago. I'm new to the forums or I would've helped you sooner.
I use source control so maybe I can help.
If you navigate under File/Preferences and then select Plugins, you'll see Source Control (Git).
There you'll want to check Automatically open source control output window. This opens the debug at the bottom if you were to have any issues.
Next check Verbose Logging.
Your identity is you.
Your e-mail is your e-mail address.
For authentication:
Select Add User/Pass Authentication
Paste in the Repository URL that you want to commit to. This is usually set up by you through github or a 3rd party.
Use your username of the repository URL. This has to be initialized from the repository URL account.
Use the password for the username.
At the end, check Automatically enable source control. That way you can commit and push/pull repositories from the repository URL.
This is all you have to do. Once this is set up, you'll see orange exclamation marks on each of your items on the right. You'll also notice an addition to the tool bar called "Source Control". Here you can commit, push/pull or create repositories. If you have set up everything correctly, the only thing you have to do in order to use source control is to commit and stage all changes, and then push to your repository. Once this is done, you'll notice green check marks on each of your items on the right.