A little confusing on the directions. Once I figured it out, I was happy to copy/paste more than one album:
Step 1 - Create a new WP page/post in order to see FB icon aka "editor button"
Step 2 - Only enter FB page ID# (not entire link)
Step 3 - Tab and select album
Still stuck on thumbnail sizes but at least it's working now.
This old support entry also helped:
"Do you see the editor button? (The one beside the upload media on the new post/edit post page?) Type in the username of the page (https://www.facebook.com/rjksn -> rjksn ) tab out of the box, and then the dropdown list will populate with the albums on the page.
Pick an album in the drop down and and click insert."
Thanks for the plug-in. It's awesome to not have to give up FB login/password just to use a plug-in.