Question about invoices

I had a guest check in June 25th. They stayed for 6 nights: 25th, 26th, 27th, 28th, 29th, 30th

I did not receive an invoice from to pay for the June stay. Has something changed? Or are they classifying the stay as a reservation for July since the guest checkout on July 1st at 11 a.m.??

I went to my invoice tab in my extranet and when I click on that it does not show an invoice has been generated for June. It was my only stay for June.