Thanks to @shindakun and the clearly written tutorial at Adding Webmentions To micro.blog I believe I’ve now successfully added Webmentions to this blog. 🤞🏼
@shindakun Thank you. Webmentions are now appearing. The thing is, they're appearing again. They did work yesterday, then stopped with my messing about. Anyway, there are now a load of mentions on the post. Thanks again!