I installed a whatsApp Beta app before on my phone and Then today, I wanted the original app back so I opened the play store. I searched for whatsapp, tapped on "uninstall" and then it uninstalled after some time. When I tried to install it from play store, it then showed an error message saying: "You cannot install this app because another user has already installed an incompatible version on this device." But I've already uninstalled the first app, cleared app preferences and deleted all folders relating to whatsapp. Maybe the app didn't uninstall completely? Please help me, I don't wanna have to reset my phone to have to use whatsapp again. I have a Samsung s9