After taking part in and purchasing a token on presale, in case you change your mind and want to withdraw your contribution back, you can use "Emergency Withdraw" button for a penalty fee of 10% of your contribution.
1. From the presale/fairlaunch page, click on the "Emergency Withdraw" button
2. Click on "Ok" to confirm the emergency withdrawal process
3. After clicking on “OK”, MetaMask will now ask you to confirm the transaction. It will also show you the fee that you are required to pay for that transaction. If you agree, then click on the “Confirm” button to finish the process.
Emergency withdrawal takes your contribution (with 10% penalty) out of Presale Pool
You can use "Emergency Withdraw" button anytime until the last 15 Minutes before a presale timer runs out.
If the hard cap is reached faster than timer then you can use "Emergency Withdraw" button until the timer would run out of the presale.