How to debug "Future home of something quite cool" issue?

GoDaddy-specific placeholder-page issue. Causes, in order to check: (1) an expired SSL certificate — delete the expired cert first (see the cPanel expired-cert article), (2) an HTTP→HTTPS redirect loop — check .htaccess and any SSL-related plugins, (3) a conflicting plugin — temporarily rename wp-content/plugins (e.g. to plugins_new) to test, then rename back and reactivate the plugins you want (renaming deactivates everything).