I got a licene for the PRO vesion but I cant register this key(Windows 10)
you need to take your Activation key of your license and ativate it inside eM Client in the Help>License section.
Or do you experience any problems when you attempt to do this?
Can not register(Computer answer can not get in contact with the server)
I guess something might be blocking eM Cleint’s connection to our licensing server.
Try adding eM Client to exceptions in your windows Firewall and Antivirus software.
Are you using any proxy setting to connect to the internet?
I still have problems to get my software registret
Regard Gunter Kreil
since you are a PRO user, I think it will be better to contact PRO support here - http://support.emclient.com/ where one of our support engineers can analyze your problem in detail and solve your issue faster.