Tom, sorry for the trouble you're having. I can commiserate as I and many others are having the same problem you're encountering. Something went amiss with respect to the core "Like" (fka bookmark) plugin and the Known Reactions plugin somewhere after v0.9.2. It's this that is causing issues with Likes and Reposts. It's a Known issue (pardon the pun) which is documented here: https:/
Feel free to add your experience to the issue (which will also bring it back to everyone's attention again) and hopefully someone will figure out what is going on in the march to release v1.0 of Known. I suspect that the functionality in saving things to the database works, but that the output display is having issues as is the sending of webmentions so that they show up on other's sites.
Chris, thank you for explaining so thoroughly. I will keep exploring and experimenting with the possibilities of Known and WP Indieweb plugins. The biggest challenge for me is trying to keep in touch with friends in the 'walled gardens' (fb &tw) through the open web. The Indieweb movement is still not very well Known - there's our pun again - in Europe (Belgium). I appreciate the way the Indieweb's 'Generation 1' is trying to help us (generation 2, 3 and 4) and I think your input is very, very valuable. Thank you.
Tom Wolf, Jul 15 2017 on stream.boffosocko.com