You’re most welcome 😊.
Following the advice on this forum, I reached out to 'Ask Emma Live Chat' to get my access code. It took me about six attempts with different agents, but I finally found a really helpful one who provided the code. After that, I was able to ask for the date, location, and time of my biometrics appointment, which they gave me.
The access code lets you track your filings online, and the USCIS will also add your NOA to your account. You might also be able to reschedule your biometrics appointment for an earlier date from your account. Additionally, your biometrics appointment letter will be updated in your account by the USCIS.
I’m still waiting for the same notices to arrive by mail, but that's just a formality since the exact same paperwork is now available in my online account.
Hope this helps everyone in some way 😊.