To schedule recurring invoices, choose how often you want them sent—weekly, monthly, yearly, or another custom interval. Your customer will receive the first invoice right away, or you can set it to start on a future date. Subsequent invoices will be sent automatically at about 7:00 AM in your time zone at the frequency you’ve selected.

Please check our detailed blog to learn more about PayPal invoicing: https://businessglobalizer.com/blog/how-to-make-an-invoice-in-paypal/