I’ve added an additionalSignUpField to my hosted login page, and I can see it on my login widget, but the data I enter there is never saved to the user’s metadata. Is there anything else I need to do to save this signup information?
I could not reproduce this issue after customizing my HLP to require an additional sign-up field. You should ensure that you don’t have hooks or rules that can be resetting the user metadata to some other value and in this way override the value provided at sign-up.