Unable to upgrade

I am using version 7.2.33988.0. I keep getting a pop-up saying that there is an upgrade available to 7.2.34062.0. When I click on any of the buttons, yes, no or more info, the pop-up window disappears but nothing happens. Anyone now how to get the upgrade?

Go to https://emclient.com/release-history.  Download the latest version, and then run the executable (setup.exe).