When I turned on emclient today it updated and now it says I need a license and won't work

When I turned on emclient today, it updated and now it says I need a license and won’t work.  I have always had the free version and don’t have a license number.  I uninstalled and installed again and the same thing happens.

Hello Jerry, we had a temporary and unexpected server downtime throughout the last couple of hours, can you please try to re-activate eM Client using your activation key if the issue persists?

Regards,