"Disconnected" in "Cloud" column

 

I am new to MQL5. I am running a Mac so after I set up a Windows instance in VirtualBox I ran MQL5 and all my workers are "Disconnected" in Cloud column and nothing happened.

Can somebody help me with this? Thank so much.


It is running on Windows 10 Pro, 8 CPUs (2.2Ghz x 8), inside VirtualBox.