skerritthegreen
Explorer
Its an actual AL cert, that's pretty much the definition of "Official documentation, such as a D&D Adventurers League certificate, might provide exceptions to the allowed rules." (ALPG, p.3)
It is a real cert, using the actual cert template (the same one all the other certs you apparently will accept are made from), issued in a legal adventure by a wizard's employee who also happens to be the big boss of D&D. The fact that it may have other problems with the way the philosophy of the campaign is not relevant to whether it is legal and DMs should allow it.
If you have an issue, you need contact customer service. You may not however, refuse to recognize it as a legal certificate.