My team has also encountered a similar situation. In mid-January, the build (App ID: 1552207792) was submitted for review and remained in the "Waiting for Review" state for several days. The status did not change, so we tried resubmitting the build, but that did not help. A week later, we resubmitted it again after accepting the new Terms of Use in App Store Connect, thinking that might have been the cause of the delay. Currently, the app has been stuck in "Waiting for Review" since February 4th — it has now been 10 days. A request for an expedited review and contacting Apple have not had any impact on the situation.