Not able to add NextGen Gallery to Nimble Page

Since the issue with “” being added I’ve not been able to get a working embedded gallery on to a Nimble Page. I’ve tried both short code container and html container, both produce the same “ngg_shortcode_0_placeholder” text. I’m aware of the limitation that for some reason it doesnt work if embedded after WP content. I’ve tried on a newly created WP page with just a title, no other content, and still the same result.

The page with the issue was updated during/after the “” issue

This page https://www.tyndalephoto.org/competition-2-images-open-subject/ was not updated and shows the embedded nextgen gallery working before this present issue.

Any suggestions welcome

The page I need help with: [log in to see the link]