H4 EAD RENEWAL - Application sent but bo receipt number yet

Hello,
We filed for my spouse’s EAD Renewal and the application packet received the Phoenix Dropbox facility on 9/17.
Her EAD expires on 9/26 but we have still not received her Receipt notice.

Is she okay to continue work or will she have to quit the job before 9/26?

We are very stressed as she has worked really hard to get this job and leaving due to a legal issue will be a nightmare

Thank you for your answers or any information that could help us

Timely filed and received ( before the EAD expiry date) application for H4 EAD extension should qualify for automatic extension which is true in your case so she can keep working.
When USCIS generate the receipt notice the received date should be the date of inward entry, which typically happens same or next working day. It may take up to 21 days to generate the receipt.