iPad and MacBook Pro won't both connect to my wifi
The router IP might not be http://192.168.0.1

On your Mac go into System Preferences and select Network then Wi-Fi in the left hand list.

Just under the Status: line it should tell you your current IP address, make a note of it.

At the bottom right click on Advanced. Now select TCP/IP and Configure IPv4: should be set to Use DHCP. This pane will also tell you your router address a little further down.

Now you can point your browser to the correct IP address for your router and see what it is saying.

You can also open up Settings on your iPad and go to Wi-Fi then click on the little 'i' in a circle icon and it will tell you the IP address it is using and the address of the router.

If the IP address being used by both is the same then there's your problem.