From the IMDb Help Center page:
IMDbPro App FAQ: Can I create/manage/cancel my account from the app?You cannot sign up via the iOS app or manage your IMDbPro account from
either app at this time. To manage your account please login to IMDbPro
from your desktop computer and select “Account Settings”.
Also from the IMDb Help Center:
How do I cancel my IMDbPro membership?I hope this helps. Please write back if you have any more questions.
