Hello,

I see you have switched to the default theme and a short description of the product has not been saved. Please contact the host support and ask them to increase PHP max input. You can check the current value for this parameter 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 service providers and ask to increase this limit. The recommended value for this is 5000

Best Regards