dear Tutu Borang,

please make sure that before login you must have to be registered.Because the first step to applying online application form is  new registration by providing basic details there after login and form filling.

But if after succefully registration you can't able to login then please check your username and password in your mailbox.

on other hand if you are not able to login even trying many solution then in my opinion you should go for a new application form by providing another mobile number and email id .