Client keeps getting "Re-publish your site to enable single-item publishing" error

We built out a site for our client where four people post deals as CMS items using the editor. Lately they have been telling us that they keep receiving this error. We are able to fix it temporarily fix this by unpublishing the site and publishing the site again including the site but the error comes back eventually. Is there something we can do to fix this?

Here is my public share link: Link

I recommend that you open a trouble ticket with the Webflow support team.

I created a help request a few days ago using the link on the bottom left corner of the designer, is this the same thing as opening a trouble ticket?

Yes it is the same. All support contacts end up as a ticket if you will.