Each Tunelinx user own a partner code. Everytime someone use your partner code you get one month free
Your partner code can be used without any limit. If 5 users buy a subscription using your code, you will receive 5 month free.
If someone buy an Artist plan, you will receive one month of Artist plan for free. In other words, you receive the same plan bought by the user.
If someone buy a yearly plan using your partner code, you will still receive a free month.
No that’s not possible