Norton mobile

ON MY ANDROID TABLET NORTON APP I HAVE A PROBLEM WITH AUTO SCANS RIGHT AFTER I LOG IN,  I GONE INTO SETTINGS AND WHERE IT SAY'S HOW OFTEN I WANT MY NORTON TO SCAN I CLICK ON NEVER BECAUSE I WOULD PERFER TO DO MANUAL SCANS WHEN I FINISH USING MY TABLET.  CAN SOME ONE HELP ME WITH THIS PROBLEM ?   

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