Just some suggestions from a new sign-up ...
The NEXT button at the top is confusing. I looked at the bottom (which to me seems more natural). I see that is the way this page works, too. Maybe 2 buttons? One at the top and one at the bottom.
Do you need to require a First and Last name? One name for chat type things seems enough. So I split mine...
I should be able to drop a file on the avatar to upload. Doing that now opens the image file in the browser. Pressing the back button takes you back to an EMPTY form. Always annoying and indicative of an incomplete product. Not a good first impression.
Just my opinions. Keep up the good work.