New User registration error (Error 405)

Hello, I am totally new to Gramps, Gramps Web and Gramps Hub. I have watched the tutorials for Gramps and have started building a tree. I have signed up for GrampsHub to create an online tree and have imported my file there. However, I’m kind of stuck there as I can’t see how to start a dedicated webpage. Do I need to set it up first on Gramps Web? In which case, I’m having issues creating an account as the only way to access the “Create a new account” is by clcking on the OPEN DEMO button and then chossing “Register New account”. And when I do that it says I will get an email from the tree owner and then nothing happens. As the GrampsHub website has been designed to be very simple, newbies like me are certainly lost to get the ball rolling the first time and since there seems to be no tutorial videos (atleast in English if I am correct) for people using GrampsHub, may be I’m not the only person to be at a loss. Thanking you for your help.