Canon has announced that as of January 31, 2020, Irista is shutting down.
Irista has been around since 2014 and was Canon's online solution for managing, sharing and printing photos. You could use Irsta through the web, Andriod or iOS.
Just posted on Irsta's home page;
Sadly, we’ve decided to close Irista on January 31, 2020. You can continue to access to your photos until the service closes. Please sign in to download them before this date.
Irista has made an option available to easily download all your photos before the service is gone.
Simply click on the “Download your photos” button from the home page, then login, and all your photos will be zipped up and you download all of them at once. Canon mentions that tags, titles, and ratings will not be included in the zipped file contents. Simply the photos.
Canon Irista has an FAQ page that you can read for more detailed information.