A Question on version and on shasum

we are replacing our Windows PC which we ran openLP and moving to a Mac and the Quelea looks interesting and thought we would try it.

It says above here that the 2019.0 is the latest the website indicates the 2020 is the stable one (instead of the 2021.1 beta) so I am curious which to run. the other issue I had I downloaded the .zip and ran a shasum -a 256 on the .zip file before I installed it and the results are different then the website for both the 2021 beta.1 and the 2020.0.

I am not sure if I am doing something wrong how I am checking it or something else I should be doing. I would appreciate any advice on how to proceed.