My 2019 business program is not operating correctly and the recommendation was to uninstall and reinstall where do I find the down low key so I can reinstall it?

Is this for the CD or download version of TurboTax? 

downloaded version

Please contact us for assistance with getting a download pushed to you by clicking here: https://support.turbotax.intuit.com/contact/

I need to uninstall and reinstall my software

cd version