My iCloud Photo Library has worked flawlessly forever. Currently, my MacOS Photos (High Sierra) won't download pics I took today that are already on my phone and have been uploaded to iCloud already (confirmed by logging in to iCloud.com). In Photos on MacOS it says "Last Updated at 12:51pm" which was over 9 hours ago. I'm currently on WiFi and plugged in to power. Any ideas? I've tried rebooting and force quit the Photos Agent from Activity Monitor with no success.