Hi Batchelor,
The invoice is landing in the In Tray, which is great, but the email notification isn't being received as expected.
You can check some quick troubleshooting steps here: Email troubleshooting under "Sent emails are not being received." This might help identify what's going on.
If the issue is still happening after that, reach out to our live chat support through our virtual assistant MOCA or submit a case via MyAccount so they can check into this further in real time and help get it sorted.
Regards,
Sai