Hello @novichok78,
As I explained in the previous reply, you must check the general settings on
WP Dashboard > Appearance > Customizer > General Options > Page title.
And under the edit page in OceanWP Settings > Page Title
Also, you can check in Customizer > Blog > Single Post(https://postimg.cc/MvZ6zc0Z).
And ensure the page title is enabled.
Please follow the articles here for more information about why the page title doesn’t show up on some pages: https://docs.oceanwp.org/category/45-page-title.
And this one: https://docs.oceanwp.org/article/872-page-title-oceanwp-settings.
Note: If you have any cache plugin or server cache(CDN / Browser Cache and Cookies and …), you need to clear its cache contents or disable them to see your changes. Also, remember to click on the regenerate all assets file and data in Elementor > Tools(if you have Elementor).
Best Regards