If you have more than one Ethereum wallet, you could import them into the app to use them. 

Go to Setting and choose Manage Wallets, click on the + icon on the top right of the screen 

- Select Import a Wallet 

- Choose your desired import method: 

1) JSON Keystore file 

2) Private Key 

3) Seed Phrase. 

* Make sure your wallet address and balance of your tokens are all correct.

- Add referral code


To get a discount on the fee, make sure to fill in your Referral Code here, you won't be able to add it after you use the app. 

If you don't have any code from your friend, you could use this one: KRYSTAL