Have You logged in before your Whatsapp other than your macbook en imac? Example you logged into your PC via apps, or PC via whatsapp Internet, maybe somehow they just controlled your whatsapp via PC? Ons marmer- of betonlook kan zijn geliefd, doch mag wat meer kosten via de complexiteit https://blogs.cornell.edu/advancedrevenuemanagement12/2012/03/28/department-store-industry/comment-page-4847/