Bob, you might consider posting specific issues, such as the reply problem, in the misago support forum, misago-project.org/c/support/30/
There's a thread on the registration problem, misago-project.org/t/unknown-error-on-register-form/1091/ I don't know if you've seen that or if it helps.
I see you have one post on the site, but not in the support forum.
Posting relevant logs there would likely help.
