Open Settings (on a phone, tap More, then Settings; on a larger screen, tap your name at the foot of the menu, then "Account & settings") and choose the Account tab. Under Delete Account, tap "Request Account Deletion", type DELETE to confirm, and tap "Delete Account". You will be signed out straight away. Your account is deleted 14 days later, and always within 30 days; if you change your mind, sign back in before then and tap "Cancel deletion". You can also email support@scaffald.com with the subject "Delete my account".