Required Fields

I am using 2.5.2 of Woocommerce and when I create a WC fields group with a required field (text box or date picker) it throws a flag correctly with the user that the field is required but even after inputting the field, it won’t let the user progress as it still thinks the field is missing. Is this a version problem perhaps ? I’ve tried it on multiple browsers and its the same on all

https://wordpress.org/plugins/wc-fields-factory/