Hi Adam,
Thank you for taking the time to try our plugin and getting in touch with us. Can you provide us with some more information, specifically what version of WordPress, PHP, our plugin and what other plugins you may have activated? If you have WooCommerce installed, you can go to WooCommerce->System Status and click the Get System Report. You can paste that information here and click ‘Set as private reply’ just above the submit button.
Regards,
Jacob