To download a free pattern, you must first register on the site. The process is then exactly the same as if you were purchasing an item: click on ‘continue to payment’ and follow the usual steps. Obviously you will not be asked to provide payment details in the end, and therefore you will not be charged for anything.
If you're still having issues then don't hesitate to write us a message via hello@makerist.com and we'll make sure to respond with a solution as quickly as possible!