Can someone please give me the correct uninstall procedure

I have a Centos version 7.1.1503
asterisk version 13
And yes I have read the wiki and the procedure I have doesn’t work.
The reason I have to uninstall is because I went and did a password (also in the wiki) and evidently it is incorrect for my version so my system is hosed an U get the Fatal Error when I try to login to Free PBX at my IP address
Thanks to anyone who can assist as I just want to get my system working again.

what is the “fatal error”?

SQLSTATE[28000] [1045] Access denied for user ‘freepbxuser’@‘localhost’ (using password: YES)

SQLSTATE[28000] [1045] Access denied for user ‘freepbxuser’@‘localhost’ (using password: YES)

mysql -u root -e "GRANT ALL PRIVILEGES ON asterisk.* TO [email protected] IDENTIFIED BY '${ASTERISK_DB_PW}';"
mysql -u root -e "GRANT ALL PRIVILEGES ON asteriskcdrdb.* TO [email protected] IDENTIFIED BY '${ASTERISK_DB_PW}';"
mysql -u root -e "flush privileges;"

password should be whatever you set it to.

Got it. Thanks
I deleted it all and reloaded from scratch
All this started because I was trying to demo TimeTRex and they wanted a database password which we dont set when installing mysql.
What do we use in such a case?

@Paiscool, Your best bet is to setup a new database user for any outside applications.