license not accepted

Since a few days i cant get de emclient activated. The program says it can not get activates but there is nothing chanced the last few days. Please help!!??

On in the Neighborhood have the same problem,  I installed the eM client free on his new computer and installed a free license 4/17/2017. Now he also get the message that he is violating the license and I can not reactivate it on his computer. This is no comercial use and it is on only one computer.

I have the activation code, also requested a new license on my own E-mail address, same result, it is saying that he is violating the license, which is not true. He did not upgrade from version 6,  have installed the newest version 7.1.