I have the same issue when trying to split long blog posts using page break in WP editor <!–nextpage–> or shortcut ALT SHIFT P
The page actually breaks but there is no pagination visible at the end of the text when the published post is viewed.
I have the same problem with the read more tag, splits the post but no link to open up the rest!
I contacted their support and was told the theme does not support pagination and was advised to use 3rd party plugin!!
The recommended plugin was last updated 8 months ago. Anyway I tried it but nothing changed.
Anyone else having similar issues?