How do you use this module?

Apologies for the support request issue, but I've enabled this module on a site, and tried to use it. I get taken to a /entity_clone/node/{node id} page, but it's completely empty except for a heading with the text "Entities referenced by field Related Blog Posts (field_related_blogs)."

I've also tested it with checking every box in the "default" column under /admin/config/system/entity-clone, though it's not very clear to me what these settings do precisely. In any case, I get an empty page (just a white screen), with that heading and a block box. From other posts here, it looks like that should contain some settings on how the content should be cloned. Am I missing something obvious on this module's usage? The README is a bit short on instructions.