Support
Getting help
Report something
The fastest route is inside the app: Profile, then Send Feedback. It attaches a screenshot and reaches the developer directly.
A price looks wrong
Check which source the number came from on the card screen first. A raw TCGplayer market price and an eBay sold price for the same card can differ by a lot without either being wrong. If the number still looks off, send it through the feedback form with the card name and set.
Deleting your account
Profile, then Delete Account, inside the app. It removes the account and its data. Nothing is retained afterwards.