@Carl  Thank you. I will do that when I get home tonight.

  @Josh_Z Hi again, I took screenshot of the log in failure, you can see that it did not ask for username , the artiles I read said, we enter admin for username and password, I tried admin, it did not work. I tried my router password (on the sticker), not work. Anyone else had a si mlar issue? Thanks a lot !

  @Josh_Z I could not paste the screenshot, that is why I attched it as WORD. 

  @Kevin_Z  Thank you for your help !  A quick question: I got the router second hand, so do not know the original status(e.g. password). -  right now I can use the router in the house, but not yet setup username password. the password is the sticker on the router. - would you say, I must do a reset to factory setting in order to Configure new  router. Anyone else welcome to jump in.

Kevin_Z wrote

Hi @Josh_Z, sorry to jump in. I guess yours belong to Type 1 in the FAQ. You only need a password to login, which is created when you set up the router, it may not be admin anymore. If you don't remember it, the only way will be to reset the router to its factory defaults and reconfigure it to create a new one.