wp.me seems to return redirects in the same scheme as the request, but the destination WordPress blog doesn't always support HTTPS. Example: http://wp.me/p3JXD-7i is rewritten by HTTPS Everywhere to https://wp.me/p3JXD-7i; that redirects to https://andreasgal.com/2014/11/18/lets-encrypt-one-more-step-on-the-road-to-tls-everywhere/ which fails with a certificate error.
wp.me seems to return redirects in the same scheme as the request, but the destination WordPress blog doesn't always support HTTPS.
Example: http://wp.me/p3JXD-7i is rewritten by HTTPS Everywhere to https://wp.me/p3JXD-7i; that redirects to https://andreasgal.com/2014/11/18/lets-encrypt-one-more-step-on-the-road-to-tls-everywhere/ which fails with a certificate error.