It's so bad!
I'm still waiting for receipt notices for my replacements. I sent 2 EADs back on mid March and I didn't receive a single notice.
I called uscis last week and the IO said they didn't receive the cards back. I told her I have tracking number and the cards were received at USCIS 2 months ago, but again, she said they didn't receive them.
I'll be one year trying to get EADs for my wife and kid, both (in H4) also waiting to get SSN.
I've lost stimulus package, etc.
Now I found your application is also older than mine...
Hope you get your EAD soon.