Hi, it seems like HMWP is currently disabled in your website. Please try applying “medium privacy more compatibility” settings from HMWP start tab, and then empty out “new wp-content path name” in Permalinks and URL tabs. After this you’ll need to add HMWP rules in nginx config file (within ‘server’ block) and restart nginx server. Let us know!
The published post should not change to draft mode automatically. Did you try disabling HMWP and checking it?
And regarding CDN issue, can you please let us know what exactly is the issue, the CDN URLs giving 404 error or something else issue. Also let us know few URLs that do not work.