A human
reads these.
No ticket queue, no chatbot. Tell us what happened and a person replies within two working days — the promise in the worst week of the year, not the average.
Long-press the item in the app and choose Report — it carries the item id with it and lands straight in the moderation queue. If you cannot get into the app at all, write to support above and say what you are reporting.
Settings → Export hands you the whole vault as a CSV, every card and its cost basis, without asking anyone. Write to privacy above only if you cannot get into the app.
A feature idea, a price that looks wrong, a scan that matched the wrong card.
The route for when you cannot sign in — what goes, what stays, how long.
Everything held on an account, why it is held, and the clock on each row.