Blue sound App cannot find my Hdmi input on my Marantz 8015

For some reason my blue sound app cannot find the new device which is my Marantz 8015 , it tells me to go to settings and look for pulse in my Wi-Fi for my iPhone but I cannot see Pulse my internet is the same for my phone and the Marantz 8015 . I’m trying to use the hdmi from the blue sound power node to the hdmi input on my Marantz 8015