My iPad Air says that it's connected to wi-fi, but the internet isn't accessible.

I've tried searching this up for hours and although I've found repetitive answers, none of them seem to work for me.
I've tried resetting the network settings, rebooting the router/modem, moving closer to the router, and I've tried changing the DNS.
All my other electronics, iphone, samsung Avant, laptops(both Windows 8.1), work - it's just my iPad that's not.
Can anyone think of any other solution regarding this problem?