That website has no official connection with Glorian, but that doesn't necessarily mean that there's anything wrong with it.
There's no "official" Gnostic movement. There are many different instructors and organizations throughout the world, each working to share gnosis in the way they feel is best with the resources that they have. Glorian does not claim to be "the official Gnostic movement." We are just one set of instructors doing our best to help the world.
So if you want to sign up for their courses, go ahead. Or if your heart is telling you to stay away, then stay away. I have not seen their website before, and do not personally know the instructors who run it, so I can offer no comment, positive or negative, about the quality of their materials or instruction. But it is a good thing that they are working to spread the teachings. We need more lights in this world.
For where two or three are gathered together in my name, there am I in the midst of them. - Matthew 18:20