If you want to change the S1 and P1 in your mysql database:
Login first to your mysql as root account
then type USE YOURDATABASENAME;
then type SELECT * FROM `login` where account_id='1';
then the S1 and P1 should appear as result
then if you want to change it type UPDATE `login` SET userid='desiredusername', user_pass='desiredpassword' WHERE account_id='1';
If successful change also the username and password of your map, login and char.