Unable to connect!

2.4.1 version on iPhone 6s plus don't connect to live.
2.4.0. version on Android work...
2.4.0. version on Android work...
technical forum - dmx software & interfaces for Windows & Mac computers
http://forum.thelightingcontroller.com/
http://forum.thelightingcontroller.com/viewtopic.php?f=48&t=5709