Opening Solidworks Add In

I recently received a 3DEXPERIENCE platform DS Challenges - Sponsorship. I have downloaded the solidworks add in. However, whenever I click on it I am directed to a 404 error page stating 'The page you are looking for has moved.' After trying to solve the problem, the solidworks add in is no longer visible under my apps. Does anyone know how to solve this issue?

 

Edu SOLIDWORKS Sponsorship