New iPad won't connect to router currently supporting laptop and old ipad

[laur 0]

Existing router which supports my laptop and old ipad is working fine. New ipad won't connect. It sees the router but won't connect saying that the key is incorrect. Key is good. I can see on other discussion sites that this is a known problem but none of the solutions have worked for me. Thouhgts? Thanks.

[dw96 281]

1) Turn off your iPad's Wi-Fi.
2) Turn your iPad off.
3) Turn your iPad back on again.
4) Go to Settings>General>Reset All Network Settings.
5) Turn your iPad's Wi-Fi back on again.
6) Re-enter the password for your Wi-Fi network and try to connect

This works for me, let me know if after trying this you're still having troubles?