Contact support
For Bingo Print Pack support, email bingo@tanfujun.com. Put [Bingo Print Pack] in the subject so we can route it to this product. We reply using this product email address through SimpleLogin; replies in older email threads may still come from a Gmail address. We aim to respond within three business days.
For billing or restoration include your receipt or order identifier. Do not send card numbers, private access keys, lesson text, student information or confidential files. Ordinary customer support follows the existing shared support workflow.
For a tool problem, describe the action and visible error without sending private content.