It says to review my gambling losses amount. According to Turbo Tax it says that my losses cannot be a higher amount than my winnings, but it was. What should I do?

The IRS will only let you deduct Losses up to the amount of Winnings, so enter both your Wins/Losses as $1,000. 

This link gives more detailed info about Deducting Gambling Losses.

Unfortunately, IRS will not all us to claim losses in excess of winnings.  It's just the way the system works.  You'll be claiming 100% of your winnings as losses.  That's the good news.