I am trying to capture my screen using snag it 11. When I click to capture, it zooms in so I can't capture the real full screen. I have tried changing all my settings and i can't figure out how to fix it.
This is often caused by the Windows desktop scaling being set to a zoom level that Snagit 11 cannot handle. Please try right-clicking on the desktop and going to "Display Settings" and setting the Scaling to 100% (note, you'll need to restart the computer or re-log into it so you'll want to save any work you have open). Once you log back in, try taking a screenshot with Snagit.
Note that later versions of Snagit do handle this scaling better so you may want to consider downloading and installing the Snagit 2019 trial.