D-Link AC3200 Ultra User Manual page 142

Section 5 - Applications
You can now use the mydlink SharePort app interface to stream media and access
files stored on your removable drive. The wireless icon at the bottom will be lit green
to indicate you are connected to the router through Remote Access.
If you have more than one device registered to your mydlink account, you can tap
Device List (in the top-left corner) and you will be prompted to select the device
you wish to use.
Note: If you see a red wireless icon, your router's network environment may not
be suitable for a direct network connection and you may experience slow network
speeds.
D-Link DIR-890L User Manual 137