Here are the steps you need to follow if you wish to delete your OneTap account
Browser Dashboard
Open your OneTap account on the dashboard
Click on your account avatar on the top right corner
Click on "Settings"
Choose "Delete My Account" under Account Information
Feel free to provide feedback and delete your account
iOS app
Open OneTap application
Click on the gear icon on the top left corner to get into "Settings"
Under My Account, click on "More account options"
Feel free to provide feedback and delete your account

