I am not able to review any post although I have enough reputation (more than 1400) on my Stack Overflow account.
However, the review queues always show zero contents.
Up until now I've only reviewed one item. Is something broken?
Meta Stack Exchange is a question and answer site for meta-discussion of the Stack Exchange family of Q&A websites. It only takes a minute to sign up.Sign up to join this community
At your current reputation, you can only see the "Late Answers" and "First Posts" (I believe). These queues are often empty and, even when they're not, a large group of users constantly patrols the queues and will snatch up the opportunity to review.
Once your reputation increases, you'll gain access to some queues that typically have a handful of items in them at any one point. Once you reach 3k, you can drown in all the close reviews you can handle...
(Minimal reputation artfully added in red)