Urgent - Conection time out wifi

[africano]

Ive had my MacBook pro for a week. Im in China visiting my sister and ive been using her wifi. But today o conected and it said i had yo choose a network and then it just says it cant access the network and that the Conection has timed out.
The Message in spanish is Se ha excedido el tiempo de conecxion.

I dont understand as i havent done anythIng. Im writing this from my iPhone On the network.

PLEASE HELP!! My Mac book pro is new!! (

 

[africano]

really need HELP!!!! I cant connect to any network. It just says Conection timed out.