Login Problem

Hi.
Actually I am unable to log-in headquarters software using User:Headquarters1
PW:Headquarters1

Hours back, I was able to log-in and I filled a small form asking some basic info (it was probably creating an account) and there was a check box which I checked. Now I am trying hard but unable to get in!
Help me to resolve.

Dear Kumar,

We have updated credentials of demo server: Headquarters1/Headquarters1
Please, don’t change it manually, because demo server is a public server for all our users.
Hope for understanding.

Best regards,

Survey Solutions team support