Looks as though you have done all the correct things to make this work. Try to use a new user with different email address to see if this helps. I had the first version (older) then tested with your version V. 5.0.DL.37000000.2974 and issued a new name for the "User registration" also tested with the "I have forgotten my password" function as well and was able verify that this version is working. This was tested on a regular cable modem with a NATed backend (192.168.0.220, Gateway and DNS 192.168.0.200 "Static").