Fail to add CrossBox Server

Hi Support,

My team would like to develop iOS App and we only have 1 MacBook Pro.
We decided to use Swift to develp the App.
So, it is better if we, a group of 3 people, can use Microsoft Visual Studio and connect to MacBook Pro to develop our App.

I downloaded RemObjects Elements with Visual Studio 2015 - 9.0.97.2071.exe and followed the instructions to install it.
But I cannot add CrossBox Sever in Visual Studio.

What is the problem? Screen captures are attached.

Start a project in Windows:

Run crossbox in MacBook Pro:

Connection:

Message in Visual Studio:

Logs in MacBook Pro: