When running the Smyle Mouse, simply look at the title of the main window to see the version.
To get the latest version, go to the main page at https://smylemouse.com and click on the “Start Free Trial” button. When prompted, enter your email address and you will receive an email with a one-time use download link. Click on it to download the installer and run the installer. No other steps are necessary, your current license file will keep on working as before.