Problem with activating the free (student) version of CATIA. Does not allow you to save the project. What to do?

Question

3D

Hello.
For study, it became necessary to install CATIA CAD on my computer. And then it turned out that the company itself offers students to install this program for zero rubles. Well, I didn’t have to beg for a long time - I downloaded and installed it.
To confirm authorization, they sent me a license file with the extension . lic, which I placed in the correct folder following the instructions.
The program started, but despite the fact that it started as a student version, in fact, when you try to save your project, it gives an error and a message that this is a trial demo version in which the saving function is not active.
This strange problem occurred to 2/3 of the students who tried to install this (student) version of Katia.
I ask the bright heads of this site not to leave the future aircraft designer in trouble. Has anyone already overcome a similar problem?