ICH-2CH How to reconnect after coming unplugged

This got unplugged from the wall. I plugged it back in and now it’s no longer connected to the app. The problem is I don’t know how to get it to blink in order for the app to find it. How to I make the thing blink???

Please press and hold the ‘up’ button of IPT-2CH for about 3 seconds, its WIFI indicator will blink.