Pulled up a Photo Album on my Android phone and managed to flip it to “list” view eventually instead of slideshow mode. When doing this the “Upload Photos” text is obscured under the menu. You see just the very bottom of the “Photos” word, but I wasn’t sure what it was when I first looked at the page.
Also - a “thumbnails” view would be helpful for mobile, as would clicking on the name of the album to get to the photos instead of clicking the “### photos” link. That wasn’t intuitive. I got there eventually, but I’d expect to tap the photo, name, or “photos” to get to the album.