ATC on my iPhone but not on the iPad Air 2?

I am able to get ATC & Live on the iPhone 6 Plus but not on my iPad Air 2. On the iPad the ATC symbol is greyed out. Any suggestions would be really appreciated. Thanks a lot.
Howard

Do you have a stable internet connection? It is necessary for live

Yes, it is fine on the iPhone. Both devices are on the same connection.

Check on the top right when on live, you will see 3 bars. What color are they?

The iPhone is green and the iPad is orange/yellow.

That’s why it’s not connecting. Not sure how to resolve it though. Have you closed all background apps and refreshed?

Thanks Brandon. When you say refresh, is that shutting the device off and restarting?

Yes and it maybe as simple as restarting your router