@ryanc was about to message you. unfortunately the Iceland website and app breaks down when you do anything related to the bonus card if you have an unset title and it tells me to call customer services so that's a fun conversation I'll have at some point.
I really need to get back to working on my tracker for sites that allow Mx or not. It became a nightmare to keep on top of very quickly and is very out of date. https://dontgender.me