You should manually uninstall any previously installed beta versions of the remote.it Desktop application before installing a new one. Here’s how to do so in mac OS.
a) Stop the existing Desktop App. Click on the "r3’ icon, then your username, and finally “Quit” from the pop-out menu.
b) In Finder, Go to the Applications page.
c) Locate “remoteit” and move it to the Trash.