How to rebind the invitation code to your 欧意 account and get a rebate? Just follow the tutorial below: 1. Click the invitation code rebind link below oyidl.me/ul/J6l2R5 2. Enter the invitation code: 521btc 3. Fill in the binding reason and submit Once the binding is successful, you can get a 20% fee rebate. My old account has already been rebound successfully—give it a try too!