28. Can I apply multiple referral codes? December 23, 2021 10:01 Updated No, you may only apply one referral code per sign-up. Choose who you want to reward wisely! Related articles 29. Can I change the referral code applied? 22. What are currency holidays? 27. I have already started the sign-up process, and did not click the referral link. Can I still apply my friend’s referral code? Comments 0 comments Please sign in to leave a comment.