Paystack checkout.paystack.com returns X-Frame-Options: SAMEORIGIN, so the shared sheet opened empty. Keep mobile sheet/desktop modal chrome, launch checkout in a named window with a Continue CTA fallback, and escape payment-return via window.opener or top.
Ticket/contribution payments open in a desktop modal or mobile sheet, initialize with the organizer email, and break out of the iframe after callback.
Co-authored-by: Cursor <cursoragent@cursor.com>