webERP 4.11.3 installation and database connection

[erpforwang]

PHP Version 5.3.28 on linux
I keep on getting error connecting with database, and this is what I did during installation of this new version:
I leave prefix: blank (I noticed in config.php, any prefix will affect the correct database name)
I have put in the 1 and 2 pages of the installation process, and it did not tell me installation correct or not, just popup with the login page, and I put the admin as the default user, and the password that I have created, it will keep telling me the database connection problem.
And I checked the MySQL database, it is empty, not data is ever installed.
I consulted with the host provider, and they helped me checked all the info in config.php and also userlogin.php, I was told it is the application issue, nothing to do with anything on the hosting side.
Here is the question: is the new version 4.11.3 fully tested and working fine? and is there anyone said the same issue in the forum?
I have no problem installing the old version before, but this new and 4.11.2 has the same installation issue.
Please help, thank you.