This morning when i oppened eclipse 2020-12 (4.18.0) my codemix stopped working, the little message on the bottom left of the screen states that my licence has expired. Im reasonably certian I should still have a couple of months left on it (i could be wrong) but when i click update licence nothing happens, It was wokring fine a couple of days ago.
Sorry that you are seeing this issue with the license.
I have converted your license to a key based one which I will send you in a private message.
Please delete the .codemix.properties file located in your user home directory, restart Eclipse, go to Help > Update License, click on ‘enter key’ and proceed with the activation. Please see this URL for more details about activating a key based license : https://www.genuitec.com/docs/setup/licensing-codemix/#Activating_a_Commercial_License
Hope this helps. Please let us know how you get on with it.