No password, we only need the email used on the clash of clans account, The system: 1. Include the email used for your Clash of Clans account (don't make a mistake) when purchasing 2. Later we will send a code to top up at the Supercell Official Store 3. The buyer sends the code in my item message (so please stand by my item) 4. After the buyer sends the code, we will immediately top up, and ask the buyer to remain standing by during the top up process, so that if there is a problem it can be resolved immediately (so there is no delay in delivery) 5. After receiving the diamond, please confirm immediately So it's safe, and not 100% via login (no password, etc.), you only need a code to top up.