There are a few possible root causes to this:
1) The network connection is unavailable on the phone. You can confirm this is the root cause by opening a browser and trying to browse the web. If you’re unable to, this is probably the issue. I’d recommend trying a wifi connection if this is observed. We can try other troubleshooting if you cannot try a wifi connection.
2) The network connection is unavailable to the application. When you first install our app it asks to allow permissions related to the network, interaction, etc. If you do not set the network connection to allow, our app will not be able to communicate. You can validate the settings for our app by going to: Options -> Device -> Application Management -> MigrationPlus -> Edit Permissions. The Connections permission should be set to ALLOW.
3) HTTPS is blocked on your network connection. Sometimes if your traffic is flowing through a proxy/business server it may block certain protocols. You can test this by trying to access https://mail.google.com from a browser. If you are unable to get there, but you are able to get to other http webpages (e.g. http://www.google.com) then this is the root cause. Best solution here is to try a wifi connection that uses a normal consumer broadband internet connection.
If you try all of these and are still having issues, please email me (email@example.com) and let me know the results of each test.