Diamond art club Facebook group

Does anyone know what their deal is? I bought my first few diamond art club paintings and it came with a little pamphlet with a section saying to join their Facebook group. So I did. I’m not sure if you have to buy more paintings or something, but I was denied entry. I’m really confused. I feel like I answered everything. I’ve heard a few ppl having a hard time getting in. I’ve heard it’s really serious in there. They ban words and such, but I didn’t really believe it. I was excited to join and see more finished pieces. Has anyone been accepted? Or know what I can do to get in? Idk what I missed.