Maybe totally not related, but i'll ask anyway,, has anyone had a customer reporting an error at checkout i replicated it and it says this..

Whoops! Sorry, but you are not allowed to perform the action requested.
You are still logged in to your account and may continue shopping. Please choose a destination from a menu..

i installed the brand new google merchant feed from numinix,,

would someone like to relicate it aswell just to see if its connected