Upload cakephp project on a remote server

Hello everybody , I have written a project by cakephp 2.4 and it is working well in my localhost Apache server(xamp) but after uploding it on a remote server I get some problem such as :

1.it says that database Access Denied for user … while I am sure that I have set my server setting on app/Config/database.php file.

2.it doesn’t connect to some plugings such as BotDetect plugin

I really need your help , thanks

do you use composer for this project? Did you run composer install on the production server?