Error license 6

Hello,

I had some problems with the license. The message that appears when I try to open hyperstudy is the following. 

What can I do? Please help me.

Altair License Manager: License error

Feature: GlobalZoneEU
Error Code: 6
Error Description:
[LOCAL] C:/Program Files/Altair/13.0-edu/security/altair_lic.dat - (Err: 6) Unable to read file

Feature: HyperMesh
Error Code: 6
Error Description:
[LOCAL] C:/Program Files/Altair/13.0-edu/security/altair_lic.dat - (Err: 6) Unable to read file

License Path: C:/Program Files/Altair/13.0-edu/security/altair_lic.dat