To start off, you said you were using the 198.168.xxx.xxx as the host for the config? If so, this is your INTERNAL IP, not your public external IP.
You can find your external IP by visiting http://whatismyip.org
Now, are you able to connect to the database on your local computer?
If so, run this query and let us know the results.
If it's what I think it is, you aren't allowing external connections to your database, which can be solved easily.
SELECT `Host` FROM `user` WHERE `User` = 'website';