Print fields on the page become empty as well.
Recently my client message me he got lost all the info from the website https://monosnap.com/file/2WYZPb09vPQpPEfm2pxI3geB6Go714
All metabox sections are lost their content and emty as well https://monosnap.com/file/KxuOdXs2LtwIdzZsC9H8NgjTmOLsrs
At the same time custome fields have their content still https://monosnap.com/file/y9xFzlSVkSLi9MjMGhJGPjAwthLop4
The website was under maintenance mode by this plugin https://wordpress.org/plugins/wp-maintenance-mode/ for half of a year, and now when the plugin is disabled all content is not visible for some reason.
I also found a letter from metabox, about subscription renewal. But it will end at 16 of may, so it should be usable for now.
Please help me to find out what is going on. I could debug everything to understand it, but maybe it is the usual case and you know how to fix it fast and simple.
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