[Sangita Support Squad]

Hi @Chris. Thanks for sharing the access.
You need to maintain the Invoice Number format stated here https://prnt.sc/hAFJnssXpOkx.
I have added a number according to this format and now the invoice number is visible on the invoice https://prnt.sc/tqZtolb2BvHg.
Kindly check carefully all the settings and let me know if you need any further assistance.