Step 3: Then open a web browser and enter http://dlinkap.local in to the address bar. You can also use the IP address http://192.168. 0.50

Step 4: The default username is Admin and the password is to be left blank. Click Login.

Step 7: To set up your network manually, select the second option from the setup wizard menu. Click Next to continue

Read more at https://dlinkextndersetup.com/dlinkap-local/.