Nothing, the problem don't fix :( I reset with the bottom also, but nothing

yes, the modem is a dual band but neither frequency is found, other devices such as telephone or computer find the modem's wifi

Hi, from friday night my router not fuond my modem internet and i can not extend the wifi, i try to reset and setup again but i can't find may networks. My network is vodafone and a try to restar the...