After wearing the tag, click the ATM. You will have two options: One to convert your crystals to L$ and the other to withdraw your Lindens! Select 1) Convert crystals to L$ and then 1) Convert all crystals. This will turn those crystals you turned in, into a L$ balance that you can withdraw.
Click the ATM again and choose 2) Withdraw. This will prompt you with a security measure pop-up to go to the URL for the verification!
Finally, after verifying, you can click the ATM again and select 2) Withdraw again. The bot will then send you the full amount of L$ up to L$ 300. If you still have a balance after, you will need to wait till the next day to withdraw the rest or you can continue adding to it by collecting some more crystals.