Xcode Server bot fails to sign product in House

I am running XCode Server on El Capitan with new XCode 7, I have three Repositories and three in House Apps. I want XCode Server to automatically sign these apps with the enterprise certificate.

This had worked for one day and suddenly all bots are stucking at "Signing Product"... A short research results in "codesign does not have permission on your certificate" but IT HAS PERMISSIONS AND IT IS IN THE SYSTEM KEYCHAIN.

What else can I do to allow xcode bots to sign my product?

Xcode Server bot fails to sign product in House
 
 
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