following up on this, this is how I've been checking my updates (may be harder if you are reading a lot:
to check updates i first check my history since it has my recently read and it usually leaves a message like: "there has been an update since you last read"
since history only goes so far though I've also been just manually checking series 4 updates by looking at my update history to see what usually updates / and if they update
its tedious but hopefully within the next week or two or so itll be resolved. theres still like 5 years of reading history for the mgg team to fix (and like thousands of accounts) so I've just been being patient

Or no updates are showing for 3 days now?