Adifier Child Theme (Classified Ads WordPress Theme) - not connecting to WP database error

Looking for freelancer programmer, this is a long term project. Prefer to developers who have experience of this type of website. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Adifier Child Theme (Classified Ads WordPress Theme) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Currently have a website issue that needs to be fixed on [login to view URL] Hosting is with Hostinger and I reached out to them for help and this is the reply: To help reestablish the connection between your Adifier theme and the WordPress database for the recent ads, you can try the following steps: Clear Cache: If you are using a caching plugin or your hosting provides caching services, clear the cache. Sometimes, outdated cached files can prevent new changes from appearing correctly. Re-save Permalinks: Go to your WordPress Admin area, navigate to Settings > Permalinks, and simply click "Save Changes" without making any changes. This can sometimes refresh the WordPress rewrite rules and fix URL-related issues. Check Custom Fields: For the recent ads that are not displaying correctly, edit one of the ads in the WordPress Admin area and ensure that all the necessary custom fields have been filled out correctly. Reinstall Theme: If the issue persists, consider reinstalling the Adifier theme. Make sure to back up your website before doing this. You can do this by going to Appearance > Themes, deactivating the current theme, and then reinstalling it. Reinstall Plugins: Similar to the theme, there might be a plugin that's causing the issue. Reinstalling the plugins related to creating ads and custom fields might help. Always back up your site before doing this. Check Database Connection: Verify the database connection settings in your [login to view URL] file. Ensure that the database name, username, password, and host are correct. The host is typically 'localhost', but it can vary. If after trying these steps the issue remains unresolved, it may be necessary to delve deeper into the theme's integration with the database. This might involve checking the theme's code for any recent changes that could affect database queries, especially if the issue started after an update or change to the theme or plugins. Given your preference to avoid technical tasks, these steps are intended to be straightforward and can be done from within the WordPress Admin area. However, if you're unsure about any of these steps or the problem persists, it might be best to seek help from a professional web developer.