
I mentioned this in an API suggestion the other day, but it seems to have been missed.
You are letting users log in to this site over an insecure channel. Please consider urgently adding this, so our passwords do not get stolen.
You can get a free certificate from letsencrypt.org using one of the many automated clients, or if you have the DNS at cloudflare it's one click to set it up and about 1-2 mins to force https for the whole site.