You can set the page or post thumbnail by adding a featured image in WordPress (from Edit Page or Edit Post page) as following:
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If you’re encountering issues with your website’s URL configuration on a WordPress site, or an issue with loading website content (Styling, Images, …, etc), it’s likely due to a mismatch between the protocol used by your site and the settings...
Plugin failed installation or update
The plugins update issue in WordPress may be due to file permissions issue or corrupted files in the plugin. To troubleshoot the issue and install the plugin, please go to WordPress admin panel → Appearance → Install plugins, and install...
Import or Export Theme Options
You can import or export the theme options from WordPress Admin Panel → Essentials → Theme Options → Import / Export.
