Question: how to change username and password in digisol router?
Answer: Access the router's browser-based utility. Open a web browser and enter http://192.168.1.1.
Log into the browser-based utility. The default username is "admin" and the default password is "admin".
Choose Setup -> Wizard as shown below.
Choose Advanced -> DNS and enter 208.67. 220.220 and 208.67. ... 
Check your settings.