The profit split will be 12% on the demo account. When you receive your live account, the profit split will start at 50% and increase every month by 15% up to a maximum of 80%. For example:
Demo Account: 12%
Month 1 = 50%
Month 2 = 65%
Month 3+ = 80%
Eventually, you will receive 12% of your profits with your demo account while receiving 80% of your profits with your live account.