My first guess would be that the wildcard subdomains are not set up correctly on your web server.
If you did set that up, sometimes the web host control panel fails to restart the webserver after configuration changes. Try restarting Apache.
My first guess would be that the wildcard subdomains are not set up correctly on your web server.
If you did set that up, sometimes the web host control panel fails to restart the webserver after configuration changes. Try restarting Apache.