After outage, Cox WiFi Hotspot works on chromebook but not iPhone or Mac

Last night around midnight, the cox wifi hotspot that I use at my house (currently looking for new router) stopped worked. It started working again this afternoon but only on the two chromebooks- not on the mac or iPhone. Can anyone explain how to fix this? I've tried forgetting the network and restarting on both devices but it still doesn't work. On the MacBook it first days "wifi does not have an IP address and cannot connect to the internet" then later will say "Wifi has self assigned IP address 169.xxx.xxx.xx and will not be able to connect to the internet". I thought maybe I had too many devices connected so I turned off the wifi on my phone. Still doesn't work.