some issues in moto g 2nd generation after lollipop version

After updating my Moto G 2014 to Lollipop I have started experiencing some issues as I don't know how to get it fixed. So the problems are:

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  Autorotate option isn't showing,

  
  


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  If I tried pressing and holding the power button, I can only see the power off option, I can't find the silent option.

  
  


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  While on the call, previously I have the ability to write a number on the dialpad which I can correct if I tap in the wrong number but now I can't find the backspace button to correct that !

  
  

Please help me out !