My friend and me both have viber. On my viber, it says my friend ady has viber. But on his viber?

its trying to say you don't have a account it isn't recognizing your account i would call the viber company to try and get to the bottom of what the problem might be you could uninstall or try to install agian see if that takes care of the problem but to call their technical support team and see if you can get it straightened out