Need some advice, yesterday iPad2 wifi was doin alrite. Then later in evening it ant connect to my home wifi anymore. Other devices such as my desktop n iPhone still can detect n connect to wifi. Only iPad having issue.
The wifi can be detected, but once click connect n enter password, the message "unable to connect appears". It is not saying wrong password.

I din recall doin anything special particular on iPad earlier....

Say, if I suspect ip conflict. All other devices which has connexion to router is already off.
Could it be someone already hacked my router n took one of the ip, in which the my iPad regularly uses this ip thus cannot connect?