Regulation Crowdfunding Education Center
You can cancel an investment up to 48 hours before the end of an offering deadline. After that point, your investment will be final and you won’t be able to cancel.
If, prior to closing the funding, the company you’re investing in makes a material change to the offering terms or other information that was disclosed to you, you will be given five business days to confirm that you still want to make your investment. If you do not confirm your investment within five business days of that notification, your investment will be cancelled.