Hi Ravi, thank you for your response!
1. Field type is “Biography” (so “About” is a created field group –> add new field, named it “bio” and then all the way on the bottom of drop down is an option “wordpress fields” with two options “text field” and “biography.” text field asked me for some further options (first name, last name, website) which I didn’t quite understand so I selected “biography” as an option instead as it seemed to work with what I was trying to do).
2. BuddyPress, and then more specifically BP Profile Fields
3. On registration isn’t an issue because its not required, so issue is after registration when trying to update or rather newly add the biography field.
Thank you for your help!