Hello alec35usa,
If you just upgraded your iCloud account the photos and videos may not have had time to upload. You can check the progress of the upload as described here:
iCloud Photo Library FAQ - Apple Support
When do photos and videos upload to iCloud Photo Library?
When you turn on iCloud Photo Library on your iOS device or Mac, your photos and videos will upload after you connect to the Internet with Wi-Fi and your battery is charged. You can see the status and pause the upload for one day when you follow these steps:
- On your iOS device, tap Settings > iCloud > Photos.
- On your Mac, click Photos > Preferences > iCloud.
Depending on your Internet connection speed, the time it takes for your photos and videos to appear on the Photos app on iCloud and all of your devices might vary. Make sure you turn on iCloud Photo Library on each device.
You may also want to check this out.
Get help with your iCloud Photo Library - Apple Support
There's a section for, "What if some of my photos are missing after I turn on iCloud Photo Library?".
Best,
Nubz