Last option worked like a charm. Indicated " ...But you can download the last compatible version." Read and followed your instructions because prior standard options did not work. OSX 10.15.7 2012 mbp

I prefer the last option of another answer.

There's only one way to install it:

• From the App Purchase History page click the download button.

Indicated " ...But you can download the last compatible version."

The other parts of that answer did not work for me on macOS 10.15.7 2012 mbp