Hey Michael,
I think I might know what’s wrong. If you go to the screen list (located under customize) can you find your screen?
If you find it click on "View" and see if it shows correctly. If it does, close this window. On your tabs(at the very top of the screen), right click and you should get a pop up message asking if you want to refresh. This will refresh your tab links and update the tabs with the new screen information.
If this doesn’t work, check the “Tabs” section also located under “Customize” and make sure you are pointed to your new screen.
let me know if this resolves your problem.