I can

I used Quicken 2007 until 2 days ago, no problem. 2 days ago I was advised to install Catalina 10.15.4 and Quicken has a sign like "do not enter", can not open it w this version of Catalina. This version of Quicken is 32 bits and it seems Catalina works with 64 bit apps.

Is there a way for me to uninstall this Catalina and reinstall the previous OS that I was using? It was Mojave.

Or is there a way for me to make Catalina work with this version of Quicken?

I do have some backups made with Time Machine, or made when closing Quicken and saving a copy; most recent one from Nov 29, 2018

Thanks for any help with this

Pedro