Security key/ passphrase

The easiest workaround for this is to connect your laptop to the D-Link
with an ethernet cable.

Make sure your laptop IP address is configured for the same subnet
(example: 192.168.0.9)
Open your browser and go to http://192.168.0.1

Default username: user
Default password: (blank)

(This is of course assuming that you did not change your
default username/password)

Once you're in, change the passphrase to anything you want.

On your router you can manually connect to the router through an ethernet cable, open a browser and connect to 192.168.1.1 in the URL bar. This will connect you to the device settings and there you can reset the WEP key to something of your choice.