Activation required for account on Win 10.

I recently switched to Win 10. My eM Client account transferred without issues. On the 29th of Feb I had to transfer some documents from my Win 7 hard disc(in the same PC). I think eM Client did an update on the Win 7 disc Went I was back on Win 10 eM Client no longer works and shows a blank License. Please advise
regards  
Spikes
spikes@mweb.co.za
joubert.spikes@gmail.com

Hello Joubert,

You should be able to activate with your old license activation key by navigating to Menu -> Help -> License -> Activate.

-Dave