Keyword Search in SEO Pages Optimization feature not functioning

Hello,

The keyword search function under the Optimize Your Pages area in the SEO Tools is not working. When I select a keyword for a page, I receive a notification to "Please wait..." but it spins until it times out and my account is logged out. I've tried several different keywords on different web pages but continue to have the same issue. I've also tried using different browsers. I used this feature a few days ago without any trouble. Does anyone know what the current issue could be?

Thanks for your assistance!

Natasha