If you are seeing the following message:

Sorry, invalid password! Please, try again.

Firstly check you have the right username and password, and make sure your password is no more than 8 characters long.

If you password is more than 8 characters, see solution below.

Solution:
You are Only allow 8 characters for your password, if you find you cannot login after joining then you may have used to many characters, therefore do the following:

1) Click - Join and fill in details
2) Make sure you have confirmed your account with email - Confirm your profile with CONFIRMATION CODE
3) Click - Forgot Password? ( A new Password will be sent to your email ).
4) Login using username and new password given.
5) Then Change you password within your profile to your desired password.

No more than 8 characters !