I did talk with Meta Support privately as they requested about this and they don't want anything to do with this error and blames it fully on Vertigo Games, I have contacted them now instead through their submit a bug report website, though I am fully aware that it will probably lead no where.
I guess the real solution is, to check forums and post about a game you're interested in before making a purchase on the Meta Store, as it seems we can't rely on Meta to provide any kind of quality control of the products they sell on Meta Store.