Cannot upgrade

I’m a registered user.

I’ve receive the new version notification but, when I click on Upgrade now button, nothing happens.

What I should do?.

Go here  https://www.emclient.com/release-history and pick the latest version,
which should be the same as the one from the main page https://www.emclient.com/?lang=en
or the Download page   https://www.emclient.com/download

Peter