July 13, 2017, modified Aug. 14: I have set this blog up to provide a place for people to communicate their desire to participate in Tarot History Forum, if for some reason they can't successfully register or post anything once they have registered. I am not the administrator of that excellent Forum and cannot cause people to be accepted as members. However I can communicate with others who can then communicate with the administrator, on people's behalf. I can also post updates and replies.
Where you can communicate is in the place for comments, at the end of this post. Such comments will be public, I think (unless there is a way to submit privately; if so I don't know it). But I think at least you can obscure your identity, if you wish, and email address.