Access denied for certification

I'm having troubles starting a certification i bought few months ago.

After i finished the training courses few days ago i tried for the first time to start the certification, its showing in the "certification" tab but when i trie to start it i'm asked to contact my admin.

Thought i don't know who is the "admin" and how to contact him ??

Does someone know what to do ? 

 

 Edu Certification