Kloulou2421 Said:
"Exclamation mark on some photos.: Thank you I had already tried turning off backup and turning back on again and this fixed majority but still a few pics with exclamation on it that it didn’t fix"
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You are welcome.
Download All Photos:
Rather than turning off backup, download them all from your iPhone (or which ever device it is). If downloaded, there would be no exclamation mark. Once all has taken place - they should appear without the exclamation mark.
Or...
Archive them:
If not enough space, then archive them. Do so, by exporting them from iCloud to an external device, such as an external hard drive. Go Here: Archive or make copies of the information you store in iCloud - Photos and Videos - Apple Support. They would not appear, though, if archived.