What does 'Invalid Security Code' mean?

In the Application Form, and in the Contact Form, it is essential that you read and enter the 'Security Code' that is shown in the box provided.  

Please see the 'Security Code' at the bottom on the page just above where the 'Send' button is.

You MUST type in the code that appears there into the box where it says 'Enter Security Code'.

If you can't read the Security Code, then click on the speaker picture, and if your computer has speakers built in, then you can hear spoken it to help you.