The issue is with HSTS. If you've visited the site before you've likely cached that SSL is required and your browser will refuse to connect. Using e.g. a 'private window' will allow it to be bypassed.
> Using e.g. a 'private window' will allow it to be bypassed
In Firefox, yes. But not in Chrome (in my experience).
Yes was my thought also but put glasses on this workaround is even better, as it may scrow up more ssl certs from other domains.