Hey there, this means our review team hasn't reached a clear decision during the 1st review, which is usually due to content not meeting our policies. Check out our YPP Policies & you can use this time to make updates. More here: https://yt.be/help/YPP-review
It's also means that your review team is too slow and should be making better decisions and faster there's no reason to hold these people up for over a year this is why I am so adamant when I say that these policies need to change and somebody needs to be looking at these faster