I have unpicked the ACF field group I had planned to use for this, pending the 5.5 release.
I wanted to get it going in the meantime by writing in manual functions that work directly with term meta.
But I finding it very hard going, understanding how to do this.
Does anyone know a workaround, a way to display, save to and read from extended meta boxes on term pages, that does work directly with term meta, not options?
Thanks.