Update: The account creation problems should now be resolved. If you were trying to make an account previously you should be able to complete registration now. Please make a support ticket if you continue to have trouble.
We're aware of a problem concerning the creation of accounts on our website at the moment, usually resulting in 'an unknown error occurred' dialogue.
We're currently investigating at the moment and will update once we have more information.
Apologies for any inconvenience caused.