With the move to MacOS Catalina several people have had issues with apps breaking - 32 bit app support was dropped in Catalina. If you have Parallels Desktop or VMWare Fusion it's easy to setup a Mojave Virtual Machine so that you can use those apps until they're updated for Catalina.
This video takes you through the process. You will need a copy of the MacOS Mojave Installer - you can currently get that from Apple here in the app store: https://itunes.apple.com/us/app/macos...
Apple do seem to remove previous editions however so grab a copy while you can.
Any questions, drop a comment and I'll do my best top reply for you.
Set up your Catalina Mac to run 32 bit Apps by using Parallels Desktop.