Two computers, one license

Work computer and private computer - one free license? Work mails I use the companies MS outlook and personal Gmail I use eM Client. Now I have a personal laptop at home and wanted to use eM Client for the same mail box, but it now de-activated my work installation. Please advise.

You cannot use a Free License on your work computer. For that you need to purchase a Pro License. 

Both the Free and Pro Licenses are only valid for a single installation. For the Pro License, if you want to install eM Client on more than one computer, then you need to purchase additional Pro Licenses. For a Free License, as long as eM Client is not being used for business, you will need to register for an additional license for a second computer.