Hello there,
I was faced to an issue with MyDLink lite on an Android device when using 4G.
MyDLink lite was enable to display live video of a DCS-5020L camera when my android device used a 4G connection, however it worked perfectly with a WIFI connection.
I solved it changing my android device APN configuration to use IPv4+IPv6 and not only IPv6.
Hope this help other facing the same issue