Why won’t my iPad connect to the internet

First, are you able to connect to your Routers WiFi network?

Connect to Wi-Fi on your iPhone, iPad or iPod touch – Apple Support

Connect iPad to the internet - Apple Support

If, having connected to your Router’s WiFi you still cannot connect to the internet, you may need to restart your WiFi Router. To restart you home router, disconnect power - then wait at least 30 seconds before restarting. When you router has rebooted (which may take several minutes), force-restart your iPad:

• On an iPad with a Home button: Press and hold the top button and the Home button at the same time. When the Apple logo appears, release both buttons.
• On an iPad with Face ID: Press and quickly release the volume up button, press and quickly release the volume down button, then press and hold the top button. When the Apple logo appears, release the button.

I completed the help suggestion still no connection. I also have an iPad mini same internet modem it has internet connection.

Does it look like this: If yes then you have to restore your iPhone: https://support.apple.com/en-us/HT201252

Suddenly my iPhone and my iPad will not connect to the internet