Unable to create a new patient

I also posted this in support, but I think that is way over my head. I am a new user and made some changes as I was learning the software. Now, I cant add a new patient. It says URL not found. I accidentally deleted the demographics group under form layout, so I tried to manually add the fields back. I am wondering if its something related to that, or perhaps another setting. But its so new, that I have no idea what to try next. Any help is appreciated.