Do you have a wireless router or an AP connected to the ER605 to provide Wi-Fi connection? If you connect a wireless router, you will have double NAT, which may have some impact on the authentication. Apart from that, do you devices obtain IP addresses from the router normally? If yes, you can try to ping the gateway to check the connectivity.

@Mukul1408 

Hi Somnus 

 

I am connecting MacBook through LAN and iPhone through wireless AP