Sorry about the issues with the old build! We just came out with a new build today that has changed a lot in regards to the games stability https://jasonafex.itch.io/bare-backstreets/devlog/382008/new-public-build-v066
Please let us know if it's working for you! As for Downloading the game, you can extract zip/rar files using https://www.win-rar.com/postdownload.html?&L=0