Ever wonder how to change or install a tab title for the campaign (Form) when opening up the form?

That Title there is actually the Facebook Post Title. To edit that, just edit your campaign, go to Step 3, then enable the Facebook Post, and there you can find the Facebook Post Title field. If you change that or enter a title, it'll be shown on both the Title that shows in the Browser Tab as well as the Title in the FB Ad when you post the campaign. 

Here's what the title looks like when you post the campaign on FB (Ad):