D-Link DWA-520 User Manual page 16

Section  - Installation
Note: please press the button on the access point within 120 seconds
and it is recommended that the access point is nearby.
Connection Established
And Click "Next".
If you encounter failure of WPS, below page will show.
Click "Retry" to re-connect to your wireless network with WPS.
Click "Next" to select the way you want to get connected to your wireless
network.
Click "Exit " to complete the installation.
D-Link DWA-50 User Manual 1