I change the password in the system, use bitnami in google cloud, but i reset the password, the password because only enter once time, so may type wrong, but sign again, can not enter, so how can deal with like this problem. link below http://220.127.116.11/login#login
do you still have the admin password? Then use this, log in and reset the user password.
You may want to check Reset admin password
Hope this helps.
You probably also have the number of logins set to 1 for the user, and if they were already logged in, that login is locked.
You might need to do a reload and clear your cache