Hey there!
I think I answered your question in the chat, however if you missed it I'll put it here for your future reference.
You'll need to register here,
https://redcountyrp.com/register your ’master account’ is the username you register with.
When you've registered, you can sign in by going here:
https://redcountyrp.com/login and using the username you've just created.
Hopefully that helps, if you do need any more help don't hesitate to contact me.