Why "wp-login.php" wordpress login is showing account doesn't exists

The main Issues is that I am entering the email address & password that I used in creating my WordPress site in digital Ocean but It shows that the email address & username doesn’t exist even I checked in my PhpMyAdmin “WordPress” “wp-user” and I am using the right email, username and password but still it shows that user doesn’t exist. However, I tried changing password by using “lost password” section but in that whenever I enter my username or email to get password reset link it shows user doesn’t exits, so what should I do to fix it, please help…