No, you should not have to reset the unit to re-enable your WiFi. However, I have had issues in the past with routers and modems not wanting to “sync” correctly. In that case, you want to power cycle both devices by first turning the cable modem on first and waiting for it to fully boot and connect to the internet. Once that has occurred you will then turn on your router and wait for it to fully boot. Once that has occurred you should be able to connect to the internet.