What is a roof certification?

I was called to look at  leak damage in a low slope roof. Their inspector was concerned about the slope & clalled for a "roof certification". A yellow page roofer, for $125, gave a 5 year cert. Well, when it leaked he came out & put down the roofing tar as you see here and said his cert only covered a repair but no guarantee. It's important to read the fine print.

As a seasoned inspector I would have not considered this roof acceptable but a serious issue that likely was to be a  serious problem.  I wonder if this unknown inspector is still in business?