Hi Richard,
Sorry for the delay. Hope you have had a good Christmas. Due to the time of year been very busy so not had chance to review your response fully until now and try and establish the information you have asked about.
Thank you for such a thorough review and I hope I can provide more info to make my situation clearer and hopefully resolve. I am not that techie so I hope I can explain myself. I have followed your thread and established as much of the info that I can.
IPhone 13 Pro
IOS 26.2, yes more than 10% storage available 89.5gb used of 128gb and I do not use optimise storage iPhone.
photos on iCloud storage on phone says 21,274 photos
iMac.
Have 1TB memory and only. used around 400gb. Machine is old model from 2015 and soon to be replaced.
It says photos 22,619 and 2,325 videos.
Gone into iCloud+ which I dont recall using before. Its show 19,468 photos and 1,806 videos.
It. does show all my latest photos and videos.
If I click on Photos app it only has photos showing up until 31st October 2025 which appears to be last date I downloaded onto the physical machine memory.
When using my machine I often plug my phone in to charge whilst I use the computer. When I used to do this the Photos app would open and it would then show any photos taken on my phone since the las download and ask if I wanted to import the photos> I always said yes so they were stored on my iMac as well as iCloud back up.
I have phone set as transfer photos to Mac automatic and apart from that can only assume that my phone and iMac are not linked as current photos show on iCloud+ account but not on photos when I open that tab.
Not sure how to get phone and iMac linked but will keep trying. Any help appreciated and certainly no rush here.
Andy