Normally on the Pitches tab, it shows the Pitch Everything tab, but that's disappeared. All the tabs except Pitch ID were disappeared too, but I manually added them to view.
I've attached a screenshot.
Sorry you're stuck but there's almost always a pretty easy fix! Don't try to start all over again–not necessary! Don't start undoing stuff and don't uninstall Max's Pitch Package, etc.
There's a 95% chance the same snag/fix is listed & answered in the Help FAQ. Check that first but if you can't find it there, post your problem + a screencap in the proper category below & we'll post a solution back ASAP!