Just dug into the code, and it looks like we disabled pagination while on single posts. I believe there was a WP conflict where it wouldn’t work (pagination along with the single post being viewed).
As of right now, there isn’t a workaround, unfortunately.
Ok, thanks for checking, Tom. In the next version of the plugin it would be useful if you could only select pagination if “Page” is selected as the “Post type” to avoid this confusion because others likely won’t know about this.