Well, now, Developer System Status page has been updated to indicate there are no issues(!)
Does Apple employees monitor this forum? Does Apple employees know that there are still issues with app store connect? I don't know about your guys, but can see my list of Apps https://appstoreconnect.apple.com/apps , but I don't get to see the detail pages of any app, it appears for a split second and then clears and shows an error.