Endersants on "[Plugin: WooCommerce - excelling eCommerce] How to let user change attribute after order?"

Hi!
After a user makes a (reoccuring) order on my page, they sometimes want to change the flavor (e-cig) that they bought. Right now I am manually answering emails. I am a php developer, how could I construct a page to let logged in users alter their order?

http://wordpress.org/extend/plugins/woocommerce/