Samsung tab active and ReachView connection problems!

Hi. The problem I have is that when I start the ReachView on the home screen, the Reach RS2 recognizes me, but when connecting it does nothing, I have tried other tablets and phones and I can access without problems. I also cannot access it from the Samsung Tab Active through the browser (192.168.42.1). From other devices I do it without problems. Any suggestion?

Hello,

What is the Android version on the tablet? Do you have a SIM card in it?

the android version is 5.1.1 and it has no sim card.
Thank you