The changes are not displayed

Hi, all the new posts I’ve created or any change I’ve done in my site after today at 12:03 are only displayed if I’m logged in WP backend, but if I log out all these new posts and changes made disappears. It looks like if I’m not logged in, my site would be cached and the new changes are not displayed. I clean the cache of my browser, but the issue persists. My WP version is 5.6.2 and my Newspaper theme version is 10.3.9.1

this is my site: mondraberri.eus

I am having the same issue!

Thank you very much for your answer. I’ve done all you say, but the issue persists: when I modify or publish content, I only can see the new content if I’m logged in. Several ours (3-4 ours) after the publication is made, the contents are finally displayed without been logged. This issue starts yesterday since 13:00 pm more or less. As you have recommended me, I’ve installed WP Super Cache plugin, but until now I haven’t any cache plugin installed in my site.

Thank you very much. I sent just the info you asked

I write to that contact email and sent all the credentials, but the issue persists, I need a solutions as soon as possible. I can’t update the news in my site.

Hi again, I finally solved the issue. It was a cache problem with my server, hosted in Site Ground. Site Ground has added a new caching service to our server and this service causes the problem.
Thank you very much for your help