Step 1: To download all the pictures from an album you will need to log in to the Kinderpedia platform through a Web Browser.
Step 2: Click on the menu on the top left:
Step 3: A menu with several options will open, choose "Media".
Step 4: Select the album you want to download to your computer.
Step 5: Click on the red "Download Album" button. The album will be downloaded as a .zip file. To extract the photos from the .zip file you can use 7zip, it's a free app which can be downloaded from: https://www.7-zip.org/download.html