Open Google Photos app on your mobile device or visit photos.google.com via your web browser, and sign in to your Google Account.

Select the album that contains the photos you want to view on Mango Display.

Click on Share icon in the top right & Click on 'copy link' if available.

Else, click on the 'more options' section and enable 'Link sharing', and copy the link.

In Mango Display paste the copied link in the Google Photos source section in the 'image' or 'background image' widget as needed.

Now any time you add or remove photos to this album they will be automatically be shown on Mango Display.