Hello,

Thank you very much for choosing our theme and for contacting us.

These issues relate to Woocommerce. Please find the information here: https://wordpress.stackexchange.com/questions/54237/woocomerce-variations

Please check the current value for PHP max input in your Dashboard -> WooCommerce -> System status. Usually, this parameter is not allowed to be changed on shared hostings so you will need to contact your host providers and ask to increase this limit. The recommended value for this is 5000min, you can increase even more.

Best Regards