Sen2Cor 2.4.0, Anaconda based Version, Recent Issues

The standalone file with .run extension just opens in web browser if I click it - I was trying to test it for ubuntu. How is it supposed to work? I have no experience installing anything from a .run file.

ok it is explained here Sen2Cor 2.4.0, Stand-Alone Installers, How To Install
it is confusing that the file is not compressed.