If you've seen my previous article, I've blogged about the creation of an account with Celsius, along with registration guide to earn 8.88% on GUSD. Using my referral link/code ( 1729804fc4 ), for each US$400 coins you deposit, you'd get US$50 referral bonus in BTC. That's 12.5% instantly! Plus, you'd earn 6.2% on this US$50 BTC! Most promo codes are for first-time users only Earlier, I read on a few forums that we could stack promo codes to enjoy extra bonus! However, this is false! Upon entering the codes, you'd be prompted that these codes are not applicable once you use the referral code. Celsius response speed Because the information I read online was confusing, I decided to write to Celsius to clarify. This was a good chance for me to find out how prompt their customer service was. Logged a ticket on Aug 25, 10:54 AM  and received a reply 1+ day later on Aug 27, 1:43 AM. This was what they shared....