Hi! I have just started experiencing this too. it's not just me, so have my team members. We can only assume it's something to do with the App Store Connect Servers, but it sure is annoying.

Hey👋. I’m also at this stage. I was given a date. Which at the the time of writing is tomorrow. my account says registration pending. Did you hear from them?

In this case, you have a goof standing for an expedited review