ı cant update my student matlab licanse

my matlab doesn opening. i tried to renew my license but now i keep getting the same error -9,57. i have watched the videos about how to renew licanse and i did the same things but why do i keep getting the same error and what does this mean? what do i do wrong? i only see one licanse number which is activated at 12.10.20. don't i need to see a new licanse number with up to date activation date?

Answer 1

[Chidvi Modala]

You may refer to the following links

https://www.mathworks.com/matlabcentral/answers/99067-why-do-i-receive-license-manager-error-9

https://www.mathworks.com/matlabcentral/answers/404028-license-problems-cheat-sheet

If none of the above links help, you may contact MathWorks support team

https://www.mathworks.com/support/contact_us.html