Licence Deactivated after 5 years of use.

After 5 years of use my licence key is suddenly deactivated.
In trying to get it started have somehow unwittingly updated the software. Did not want to do this. It was working fine and I don’t like to change what has worked for 5 years almost perfectly.

Same problem on my end, but no update done. This morning it was working fine with the current license.

Same here.

Hello,

The issue was caused by an error in our Licensing system and we worked hard on a quick fix. 
By now you should be able to continue using eM Client. 

We apologize for the inconvenience.

Russel Markosky
eM Client

Had to remove latest version of software and download version 6.
All working good now.