How can I connect my iPad to my U-Verse receiver if they are not on the same wireless network?

I'm trying to set up the Uverse remote app on my iPad. When I start the app, it begins the setup steps - one of which looks for my receiver(s). 

The problem is, I do not have ATT internet (I use a different provider out of necessity). Therefore, I can't connect to the same network as the receiver so that the app can recognize it.

Is there any way around this? Or am I just out of luck?

Thanks for any info and please ask if more info would help