MATLAB: Problem with MATLAB running

license manager error -9MATLAB

I have just downloaded MATLAB and under user license I put my full name as I am the person who will be using this. I am currently logged in the laptop under my mother's user as I don't have a user myself, is this the reason MATLAB will not run? As it shows I have a 'license manager error -9' whenever trying to run MATLAB, and also says my username does not match the user name in the license file- how can I fix this problem?