meaning of ineligible
In iCloud Drive the icon against Photos shows a cloud with a line through it. The line runs from bottom left to top right. I have picked up that it could men 'ineligible'.
My questions are:
1. What does it mean?
2. If it means one or more of the images which I have put into Photos is ineligible for icloud what do I do? I have more than enough storage: 165.73GB. The iCloud drive folder also sows that the Photos Library is is 30.86GB.
3. If some images are ineligible how do I find them and enable them to become eligible?
I'm on Sierra v. 10.12.4
iMac, OS X El Capitan (10.11)