Upgrade Drive Space Not working


Hello, I have a free account from the old c9 site before it became part of AWS. My harddrive is now full and I am trying to upgrade it, but it doesn’t go to page after I select the larger disk size and press resize. The popup shows up that says “Go Premium” but that leads to nothing. When I try to find another way via my settings, I dont see an option to upgrade either. Does any one know how I can upgrade my account?