D-Link DIR-890L User Manual page 23

Section 3 - Configuration
If you would like to use the mydlink services (the mydlink portal at mydlink.
com or the mydlink Lite app), you must have an account. Click Yes if you
already have a mydlink account, or No if you would like to create one.
Click Next to continue.
Note: If you do not want to register at this time, you may click Skip to proceed.
If you selected Yes, I have a mydlink account, enter your mydlink Account
Name (e-mail address) and Password.
Click Next to register your router with your mydlink account.
D-Link DIR-890L User Manual 18