App screen refreshes again and again , cant find where to add clock set to false block !

My app screen automatically refreshes again and again .I have seen other people problems and mostly they get their solution by changing clock time to false . I have used clock to check users internet connection all the time but i am unable to find where to add that clock set to false block .
PLEASE someone view my blocks below and help me where to add the block or remove any specific block.

I am a beginner koder so thatswhy i am unable to solve this .
plz somebody help me at this