Why am I receiving "Bad HTTP response (405 Method Not Allowed)" when trying to add a site? - ManageWP

Q. Why am I receiving “Bad HTTP response (405 Method Not Allowed)” when trying to add a site?

The website at the URL you specified is not a WordPress site. For example, it could be a static HTML page or redirecting somewhere else.

Make sure that the URL you enter points to the home page of your WordPress site.