Unable to contact license server after an automatic update to last version today

Good morning, we are experiencing problems to reach your internet site today, we have 6 Pro licences in our company, one of them cannot work giving following error : unable to contact license server
Can you please help ?

Hello Gian, are you using any security software on your computer? If so, make sure the application is able to connect to the licensing server at http://licensing.emclient.com/ or to Port 80 through an exception. You can try to temporarily disable the security software in order if the issue persists?

What version of eM Client are you using on your computer, can you please check the exact release number in Help > About?