This means the review team hasn't reached a clear decision during the 1st review, which usually happens if your content is close to not meeting our policies. Take another look at YPP Policies & you can use this time to make updates. More here: https://yt.be/help/YPP-review
Hi again, as we shared in our last post, this means your channel is being held for additional reviews to check if it's aligned with our policies. Our team doesn’t have any additional info or timelines to share: https://yt.be/help/YPP-review