Chris, I've disabled Pingbacks on my WordPress due to an extensive and annoying amount of spam.
However, I did send a webmention at 2016-03-10 16:01:01, which I've checked now. The response was:
error: no_link_found error_text: The source URI does not contain a link to the target URI. code: 400 message: Bad Request
This is a problem. The source was
https://petermolnar.net/press-this-indieweb/, the target was
http://stream.boffosocko.com/2016/sharing-from-the-indieweb-on-mobile-android-with-apps-and and that URL on my site does contain an href attribute with this exact URL to your site.
Any idea what could have gone wrong?