Your instructions are clear that for my own account to have API access, I need to manually turn it on. Is this also true if someone gives my app permission (via oauth2) to access their surveys? DO they need to ALSO go in manually and turn on API access?
I think so – If you are accessing someone else surveys, that would imply that you are accessing their account via the API – you would likely need them to enable that access to you.
I’d be curious to know if you have made progress on this since posting?