The concept of “public” album is unclear

Hi,

My question is about the feature to show (or not) the private albums of Google Photo. I installed the plugin and configured the OAuth 2 successfully. In the settings, there is a parameter called “Public Albums Only”. If I say “True”, I see no albums. If I say “False”, I see all my albums. This means that probably all my albums are private (makes sense…). But is the concept of “public” album still existing in Google photo to be able to have a subset of albums shown in PWA+PHP ? The info I got speaks about sharing a link (but in that case, the album remains private and only people having the unique link can see it), or explains how to render an album “public” by publishing a post to Google+. But after these two operations, the album is still not considered as “public” from the PWA+PHP plugin point of view…

What operations should be done on the current version of Google Photo so that an album becomes “public” from the PWA+PHP point of view ?

Best regards.