This issue only occurs on my Mac that is running Ventura 13.1. Photos on my Mac is version 8.0.
I am not using a VPN or security software (other than the Mac Ventura operating system).
I have 300 Mbps download speed / 11 Mbps upload speed and am connected to Wifi all the time at my house where I do most of my work.
On my Mac, I have iCloud Photos turned on.
When I open my Mac Photos, it shows it is pointing to a Photos system library (.photoslibrary) stored in my iCloud account. This is not the Shared Library that I want it to point to, but an old version of my Photos library.
When I go to Photos / Settings and select Shared Library, it gives me a screen with the only option being to "learn more." It takes me right back to this help page (not helpful).
When I go to my Photos / Settings, under "General" it shows I am using a library on my iCloud that is not the Shared Library; however, the only options on this screen are to "Show in Finder" or "Use as System Library." If I select "Use as System Library" it warns me I will have to turn off iCloud Photos to proceed and that once I turn of iCloud Photos I can no longer access them in iCloud.
Shared Library Help screen information says I should have an invitation to accept from when I created my Shared Library, but I can't send an invitation to myself as I am the Shared Library owner? No invitation shows in Photos for me to accept.
How can I point my Photos to the Shared Library? When I go to iCloud.com, I can see the Shared Library photos, and I can also see them on my iPhone; however, I can't point Photos on my Mac to the Library -- on Mac Finder there is no Shared Library showing in my iCloud account and I cannot see a .photoslibrary type file in my iCloud account.
I am logged into iCloud on my Mac with the same login as the one I use to access the Shared Library on my iPhone and on iCloud.com, yet I cannot connect my Mac Photos app to this Shared Library. All I can see it the old library that is an incomplete version of the Shared Library.