Cannot install LO on Mac Catalina: “LibreOffice_7.0.3_MacOS_x86-64(1).dmg” is damaged and can’t be opened. You should move it to the Trash.

Just installed Catalina and cannot update LO. I did allow apps downloaded from Anywhere!

“LibreOffice_7.0.3_MacOS_x86-64(1).dmg” is damaged and can’t be opened.

This message is quite clear - so

I did just that (from mirror.clarkson.edu), and nothing changed. Same response by Catalina.