The market moves. The payout is computed when you create the ticket, not from a chat screenshot.
About 25 minutes. Miss it — a new ticket and a new rate. Do not top up the old address.
Rate-lock rules have their own page. The desk will not argue a deal without a ticket number.
After you pay, watch the cabinet — not a “what’s the rate now” thread.
FAQ
Homepage rate?
A hint. The lock is on the ticket for the pay window.
Top up the old address?
No. Open a new ticket.
Open an exchange ticket · City catalog