Update: The Stablegains service has now been discontinued.
If you wish to transfer your LUNA airdrop from Stablegains to KuCoin, sign up for / log in to your KuCoin account and navigate to the deposit dashboard.
Select deposit LUNA (Terra).
Set the network to TERRA (see screenshot below).
Then copy the deposit address in KuCoin and paste it into the withdrawal dashboard in Stablegains.
Double check that the address starts with “terra...”.
Deposits into KuCoin need a memo. Copy the memo from your KuCoin deposit account into your Stablegains withdrawal dashboard.
Finally, select the withdrawal amount in Stablegains and hit request withdrawal.
How it looks in KuCoin: