If you use a referral tracker it cannot be a code snippet, it has to be copy and paste URL. You can place the link on your profile page.
When you edit your profile, you type the words you want linked, then select the link icon, a pop up will appear. You copy the link URL and paste in the appropriate area. You have now created your link referral. if your link icon doesn't work you need to report it. Mine is working fine.