Married with Children Said:
"iCloud Photo Library not showing up: I've had my iCloud account for several years, with no problems. Now my MacPro doesn't show anything more recent than Dec. 11, '22 photos.[...]"
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For reference...
Troubleshooting Lost Photos:
Loss of data is something you would have agreed to upon opening an Apple Account. So, if the following does not work, then they are gone. That's just the way it is :(
Four Tactics to Try:
A. Start here: If you're Missing Photos or Videos in the Photos app - Apple Support
B. Check iCloud Directly:
See if they reside in iCloud Photos. Log in here: https://www.icloud.com/photos
C. Use a Time Machine Backup:
Did you backup your Mac, recently? If so, then restore your Mac from that. You'd backup you Mac prior to doing so, and then restore your data from the backup you just created, through use of Migration Assistant.
D. Where Else to Check:
- PC
- PDA
- eMail
- Mac Device
- Cloud Storage
- Android Phone
- USB Flash Drive
- External Hard drive
- Secure Digital Card
- Compact Flash Card