D-link COVR ac1203 - unable to connect kobo mini, iPhone 4s

Greetings all

I have had this set up for a week now and it is working well, however I ran into a snag today

Both my KOBO Mini and an iphone 4s that i use for streaming podcasts won't connect at all to the new network.

What i have tried.

Rebooting router

Rebooting Wifi

turn wifi on and off on devices

turn bluetooth off/ make sure airplane mode isn't on/toggle it to see if it makes a difference

Reset network settings on iphone 4s

reboot both devices

Thats about it

Any help would be appreciated