You'll just need to make sure you have your License and product number and follow the on screen message. Also, you can also login through CAMPS. Let me guide you on how to do it.
Select the Country.
Drop-down arrow choose the Product.
Choose the Version.
Tap Search once done.
Follow the on screen instructions on how to download the product.
Also, you can log in through camps to help you the following things to do, edit or change your email, find your license number, download products you've purchased, update your payment, see your product order, transaction, change your primary contact, add, edit or remove users and change your business address and phone number.