How do I change my email address on Askaboutmoney?

Many mobile browsers have an option to switch to the desktop view/theme of a site. E.g. Chrome on Android has the "Desktop site" option in the main menu which is unchecked by default. You can check this to temporarily switch to the desktop version and follow Brendan's advice above. Then you can switch back to the mobile version if you prefer.

Edit: added link.