Ipad 4 wifi issue

[cujo98]

Ipad 4 connects fine to wifi at place of buisness. go upstairs to apartment and it kicks it out and asks for a password. when typed in it say it is incorrect everytime. go back downstairs and it hooks up just fine by itself. used to work no issues in apartment until other day when the password bs started. have tried forgetting network, resetting network, unplugging router, restarting ipad, amongst many other things.