It looks like it is not possible anymore for not koreans to make account here , because you now need a korean phone number to register.
BUT when you have an account those still work
Melon streams count towards : MBC Music Show! Champion , Mnet M!Countdown and KBS Music Bank
So you are still able to try to get free passes , buy passes and help stream with those
1. Go to the website
2. Log In
3. Click on here , top right of the screen
4. Scoll down till you find the offer you want . in the moment we are looking for this one
5. It does not seem to matter what you pick , so choose one image , click on the big button , choose again , click again and than click on the bottle , or the button under it
6. if your lucky enough that you win you will be given a code . Sadly they made it very very hard to win in the moment
7. If you won a code , copy it ( i always do this with highlighting the code , than Ctrl+C on your keyboard
8. Go back to the main page . Easiest way to do it , just click on the Melon Logo at the top
9. Click here . I know there are diffrent ways to get there , but i find this easiest
10. Click on the green button
11. Enter the code , click green again
Your code is enterd now but not active yet
12. To do that , you can click here on the home screen
13. Then all whats left to do is activate here and your ready to start streaming
14. This is where you can log back out