Glad to hear James! Nice work debugging this 🙂
are they coded as an extension of the post class out of interest?
Events are custom post types, which in a sense is like an extension of built-in posts. You can read more about it here: Plugin Handbook > Custom Post Types.
Regarding the custom order plugins, I’m mostly sure that there’s at least one that let’s you choose which Post types (events, posts, pages, etc) are affected by the plugin. You cna give that an extra try if you need those.
I’ll go ahead and close out this thread, but if you need help with anything else please don’t hesitate to create a new one and we will be happy to assist you.
Best,
Nico