@Uniquimica 

Do you use the Controller Software, Hardware Controler, or the router's own web UI to manage the router?

If you are in the Standalone mode to manage the router, how about using a simple username and password the first time you log in?

@John1234 

In standalone mode When turning on the er605, at the first login, you create a username and password.

After that, I changed the IP to 192.168.0.10

But, it doesn't recognize this login and password created earlier.

After this change, I can't login in standalone mode.

I did the reset and entered by controller mode.

Thanks for your answer.