Walgreen Photo Uploading

A quick an easy workaround is the following;

1 - select all of the photos you want to upload and bring up the Info pane for them.

2 - add a unique word to the Caption field, like Walgreen.

3 - in the select photo window of your browser do a search for the unique word:

That will bring up the photos you selected and can upload them to Walgreens.

Are you running Ventura? If so, you may be running into a glitch in the way Photos is handled in the File Upload routine. It used to show all your albums, but now it shows only the full Library. Is that what's happening?

If that's it, then you have to work around it for now. The search box is available, so you can try using searching for your picture with its file name, a keyword you've assigned, a person, or a title. It helps to add keywords or titles to pictures as you go so you can find them later.

Another option is to export the pictures you're going to use to a folder, perhaps on you desktop. Then you can upload from there.

Also, you can leave feedback about this bug here:

Feedback - Photos - Apple