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iOS 15.1 iPHONE 13 Norton 360 stops the internet working

Norton 360 stops my iPhone 13 on iOS 15.0, 15.0.1, 15.0.2 and/or 15.1 from accessing the internet; the DATA is blocked.  I can receive and make phone calls on my smartphone, but anything else it drops the connection.  I have tried the obvious 'Airplane' etc tricks, and in switching the relevant settings of 'all' the APPs.  It worked for iOS 10.x.x version brilliantly.