Unable to retrieve catia v5 application. Please verify catia v5 is correctly installed

Hello, ive got 3dexperience catia student plan for 60€,

The application i am running is similar to catia but it  is not catia v5 specifically, also when i try to run catia v5 it gives me pop up error saying Unable to retrieve catia v5 application. Please verify catia v5 is correctly installed
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