Chromecast how to do ? – GSE SMART IPTV Review

I like the app very much and its working well on iphone and ipad Airplay Apple tv also , top Ut can anyone tell me how to work the app on chromecast When I try it , I only see the Logo of GSE and that’s it Can someone help me out ?
Review by Martin D-34 on GSE SMART IPTV.