Make sure you have the latest version of the PokerStars app installed and restart it. If you have a firewall or security software, make sure it allows the PokerStars app to access the Internet. Restart your PC / smartphone. Reinstall the PokerStars app.
United States Department of Justice website seizure notice. Online poker was suspended on April 15 at the top three United States poker websites (PokerStars, Full Tilt Poker and Cereus Poker Network).