Since we develop only premium themes to meet the high standards and expectations of our customers, our Manufacturer theme is a bit more demanding on the resources than your average basic theme. The Manufacturer WordPress Theme is designed and developed for use with WordPress 5.2 or higher. The code was written to be backward compatible where possible, however, we recommend you use the current WP version when possible. If you are not using WordPress 4.8 or higher and can upgrade your site we recommend you do this before installation.