Blog page settings not working
If you have assigned the Blog Page Template to your blog page and the custom settings applied to the page settings section are not applied, that’s most likely because your blog page has been set as a posts page in the WordPress Settings -> Reading section. When a page is selected as a posts page, it uses the index.php template, instead of the selected Blog Page Template and the default page settings would be ignored. In this case, go to the Settings -> Reading section and make sure that your blog page is not selected in the Front Page Displays -> Posts Page field.