Chromecast not found streaming from andriod

[nickname 0]

i have emby running latest version.

 

when i am at a remote location i can stream to chromecast with my ios devices no problem

 

but when i use a andriod device it dosnt find the chromecast somehow...  sometimes it dos for a few minutes then when i stop the movie and try again .. the app cant find the chromecast anymore.

 

if i use my ios it works perfect except from the browser then i also cant find the chromecast

 

anyone know why?

 

its one network behind 1 router no funny things very basic, samsung tv wifi router mobile device and a chomecast.