Not possible to change email address

The documentations says clearly - Settings - and you can change your email address. This is incorrect - both the Android app and the online version will not allow the email address to be selected or changed. You can amend you name and password, or disconnect an OAuth account, but it is not possible, like the support documentation says, to change your email address. I am left with deleting my account and starting again because it also seems impossible to contact ABRP directly.