I've been trying to troubleshoot this issue for a few days now.
I have a clean wp install
Just installed multisite with sub-domains
I can create a new user site manually and get email confirmation - When I try to activate the site from the email, it has me change the password, when I go to log into the site I get sent to a 404 page
I can visit the site "fitcampusa.biz" and register a new site - it takes a while to get email confirmation - when I try to activate the site from the email I get sent to a 404 page
So far, I have tried multiple installs following the directions exactly as on wpmudev and as on wp.org
I have checked with my host: bluehost, and the .httpd conf is set right to allow sub-domains
I am not sure what I am missing. Maybe, where the root file for the sub-domain isn't correct. The path is "public_html/fitcampusa"
I recall reading that I cannot install a sub-domain wordpress in a sub-directory does that count (above)?