The licence was removed, any try to add the licence again leads to an error

I started em Client and I was told, that there is no license (all of a sudden). Then I tried to enter my license, and I was told, that this computer can not be activated: Reason: License policy. I should contact support.

So what is wrong?

do you already have email client installed on another computer?? Only allowed one free license.

Hello Christian,

If you’re receiving this message, your license may have been deactivated due to the violation of our license policy, such as using the free license for commercial purposes. If you’d like to hear more about our policy or raise any objections, you can contact the sales department at sales@emclient.com
You can also find more information here http://www.emclient.com/faq-licenses

Regards,
Maurice