Access to the MTR Forums is limited to users who have helped the project with their financial $upport.
Have you $upported the project with a gift?
No - You have not supported MTR before - Go to Step 1
Yes - You have supported MTR previously - Go to Step 2
Step 1 How to Send a Gift where you will find the instructions. Once your gift has cleared PayPal, you will be emailed MTR4 by the developer. There is no download link.
Step 2 Registration & Activation - Paying close attention to the instructions in this link.