Unable to uninstall TurboTax Business 2019

I originally downloaded Turbo Tax Home and Business 2019 and everything was working fine. Then I found out I needed to use Turbo Tax Business because Home and Business didn't have the form I needed. I downloaded Business 2019 from a download link provided to me but when I try to open it it says "Could not connect to the update site" (Remote Server Error 404). I tried all of the steps listed but am unable to uninstall (it says "Turbo Tax installation has encountered an unrecoverable error"). Now my original Turbo Tax Home and Business is being affected - I saved my tax file to my desktop, but I'm unable to even open that now. I'm not sure if having two Turbo Tax installs is causing the problem but am getting frustrated because I don't know how to reach technical help directly on the phone and the links that were sent to me didn't help. I don't want to lose all the information I have already entered! Everything was working fine until I downloaded Business 2019.