yesterday I installed MySQL plugin and enabled the Web Interface. Then logged into MyWebSQL with User: root and without password successfully. At that time I didn't change any password or any setting. Today I want to log in again. But I couldn't.
Although I changed the root password of the four users (firstname.lastname@example.org, root@::1, root@myserver, root@localhost) over terminal (with the help of the page here), I can not log in and get the error message "Datenbank-Verbindung zum Server fehlgeschlagen. Host: localhost, Benutzer: root" (screenshot attached).
Today I spent several hours for solving this problem but I couldn't. Could you help me please?