It looks like the App Store has caught up and apps are now getting new ratings. This means that on April 5th most apps will see a higher than average increase in new ratings as those are likely all the ratings received when the App Store was frozen.
Posted Apr 06, 2022 - 10:13 EDT
Apple seems to have stopped updating ratings in the App Store. We're watching the App Store and will update once we see new ratings come in.