hopefully this is what you are looking for.
i went to amazon.com and logged in. at the top right of the page (underneath the search box) there is a clickable link that says “Hello, username” below that it says “Accounts & Lists”. clicking on that took me to my amazon homepage. on the left side of the page there is a box titled “Digital content and devices”. “Amazon Drive” is at the top of that list for me. i clicked on that and it took me to my cloud drive. listed at left is my total amount of storage and how much is in use. at the top left of the page are links to “Amazon Photos” or “All Files”. clicking on photos took me to a page where i could upload files