WiFi is working fine. iPad appears to be connected (blue checkmark next to network name in Settings, WiFi symbol appears in upper left on main screen), but it won't connect.

Try all these steps first:

If your iPhone, iPad, or iPod touch won’t connect to a Wi-Fi network - Apple Support

One additional thing you can try is to reboot your home modem/router to see if that resolves it. Of, take the iPad somewhere else and join a different WiFi network such as one at a public library, Starbucks, etc. and see f you have the same issues. If not, then you can conclude that it's a problem with your home router or Internet service.

Reboot device and network

Force Restart (won't affect settings/data/music/apps/etc)

1. Press and hold the Sleep/Wake button

2. Press and hold the Home button

3. Keep holding both buttons until the display turns off, then back on displaying the Apple logo.

If no luck, reboot your network:

1. Unplug both modem and router (if combined into one unit, unplug the single unit)

2. Plug in/boot the modem first, allowing one minute or so to stabilize

3. Plug in/boot the router second, allowing one minute or so to stabilize

4. Try to access your network again with the device

If no luck, try forgetting the network under Settings/Wi-Fi, tap the blue-circled "i", then tap "Forget This Network". Now reconnect to your Wi-Fi network with the proper Wi-Fi password.

What types of Internet services have you tried to know that the Internet connectivity is not working? For example, have you tried email, messages, and also many different web pages in Safari?