Hi Monique,
I've been wondering the same thing, and I think I just found the answer. You can get to the reviews page by doing the following (at least if the web page works the same way for you as it does for me):
1. When you're logged in, click on your picture in the upper right hand corner.
2. From the options that drop down, click "edit profile."
3. In the "edit profile" page, there will be several options along the left side of the screen. Once of them is "reviews."
4. Click on "reviews," and you should get the same page that the "review" tab on the top of the screen used to take you to.
This is needlessly complicated, and I hope that Airbnb makes it easier soon, but at least you can still find what you're looking for. Hope this helps!
Brian