How to activate Matlab student version on my personal computer?

I have Ubuntu 14.04 AMD64 operating system. I have a student license for Matlab, granted to me by my university. I have installed Matlab but I have not activated it. When I tried to activate it I input the username of my MathWorks account. Now when I run the command

sudo matlab

at the command line then I receive the following error report:

License checkout failed.
License Manager Error -9
Your username does not match the username in the license file. 
To run MATLAB on this computer, you must run the Activation client to reactivate your license.

Troubleshoot this issue by visiting: 
http://www.mathworks.com/support/lme/R2016b/9

Diagnostic Information:
Feature: MATLAB 
License path: /home/thisUsername/.matlab/R2016b_licenses:/usr/local/MATLAB/R2016b/licenses/license.dat:/usr/local/MATLAB/R
2016b/licenses/license_thisHostname_883883_R2016b.lic 
Licensing error: -9,57.

How can I activate the Matlab product? Perhaps I put in the wrong username during the activation process. What would be the correct username? Furthermore, how can I run the Activation client to reactivate my license?

Answer 1

[Kojiro Saito]

You can do activation again. Assuming you're using Linux, the activation script is located in MATLAB_ROOT/bin/activate_matlab.sh

Where MATLAB_ROOT is the directory which your MATLAB is installed.

Please see, How do I activate MATLAB?

Thanks