Problems while launching Catia application

Hi, I'm a member of a FS team and since aproximately three weeks, when I try to open Catia applications an error occurs (it seems that it is a problem with licenses and a message like the one of the image appears. What can I do in order to solve this problem? Thank you.

Edu ​​​​​​​3DEXPERIENCE ​​​​​​License Issue