发货延迟通知

Write a notice to buyers whose orders are delayed.{{#input}} What happened and the new date: {{input}}{{/input}}{{^input}} Ask me what caused the delay and the new date first.{{/input}}
Three versions: a message to send to each buyer (3-4 lines), a notice for the shop page or the chat auto reply (2 lines), and a reply for a buyer who asks to cancel. Each says what happened in plain words, the new date as I gave it, what I am doing, and what the buyer can do (wait, change or cancel through the marketplace).
No excuses, no blame on the courier unless I said so, and no promise that the new date is certain unless I said it is. Put [placeholders] for order numbers and names.