Please deactivate all the plugins not related to the theme and switch the parent theme, check the issue, If the problem has gone, activate the plugins one by one, checking the issue to detect which one causes the problem.
if the problem remains, even after the plugins deactivated leave the plugins to deactivated for us to check and provide your admin rights for the user.
I followed your suggestions, I deactivated “WPBakery Page Builder” and the layout come back correct. I think that there is a conflict with this plugin.
You have set the “Stretch the row and content” in the row that contains the Blog element, this option can be enabled for full-width pages without the sidebar. Please check now, I have set “default”
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