Alex2020: Thank you for purchasing the Samsung TU7000 TV and for your review. Samsung offers hundreds of apps in our App Store that you can download, and we are continuously adding more premium content and new services to our Smart TV platform. Using the Program Rating Lock function can be useful for controlling what programs children can watch on the TV based on their ratings. This does not block programs originating from external sources such as Blu-ray players, DVD players, or USB files. Go to: Settings > Broadcasting > Program Rating Lock Settings Every time you access Program Rating Lock Settings, you just enter the security PIN. You must also enter this PIN to watch a blocked program. The default PIN in “0000”. To change the PIN, go to Settings > General > System Manager > Change PIN. To optimize the smart TV performance, please try Device Care option under the Support Menu. Go to Settings > Support> Device Care > Start Device Care This service checks memory and frees up unused cached memory and closes background apps. I hope this helps to solve your concerns. Should you need further assistance, please contact Samsung Customer Support. 1-800-SAMSUNG (available 8AM -12AM EST, 7 days a week) Or visit us on the Samsung website and click on the ‘Support’ link in the upper right corner of the homepage for: 1) Contact Us Options (LiveChat, Remote Support, Facebook, Twitter) 2) Product Support 3) Manuals and Downloads 4) Warranty Info 5) Product Registration: Registering your product gives you access to easy warranty support, convenient opt-in to special promos and offers, faster troubleshooting and service, and quick notification of system updates 6) Samsung Community: A great resource for getting help from Samsung moderators and customers and more 7) …and more product, repair, order, and care options ~ Samsung Solutions