ESP8266 question - not connecting

[dacflyer]

hi all again...
i got a wifi clock i built from a kit, works great, friend liked it so much that he wanted one also.
it works great at my house, but it will not connect at friends house..
i have cable wifi, he has DSL wifi.. and the clock is set up correctly with his router and password etc..
what can be the cause of it not connecting?
it has to be something in his router, the clock works great at my house, and even at work.. so it's not the clock being a issue.
the wifi module on the clock is a ESP8266

any advice ?

[CeaSaR]

Does your friend have MAC address security enabled? Any other security enabled that needs to be addressed?

Just a thought.

CeaSaR

[dacflyer]

i think i saw something about MAC address not enabled... i think..
i could double check next time i am there, he lives about 20 miles away.