Hello.I have a few questions for 43PUS6101 model. 5d1358

1. Why did not cooperate fully with the Logitech Wireless Touch Keyboard K400 Plus CZ?
2. Why is the TV viewer Opera (kinda sucks) and not need Chrome?
3. How to remove the child lock out channels for adults (every time you switch to another program must re-enter the code) and the instructions to me it does not work.
4. Why in the Applications menu lacks apps facebook 😕

I hope that it will solve the firmware update !!!

Thanks. And have a nice day