"No receipt can be sent: the school address is not entered in Settings."

Where: student profile, Payments card, Send receipt or Resend buttons.

Why: the school address is printed on every receipt; without it, no receipt is sent, neither by hand nor automatically after a payment. Nothing is sent and no receipt number is used.

What to do: the owner enters the address in Settings, Payment receipts section, School address (on receipts) field, saves, then sends the receipt again from the Payments card. For the owner, the message offers a Settings button that opens Settings directly. Instructors cannot change settings: they ask the owner to enter the address.