Ive logged out of my FB account, and I can see them all - that probably doesnt help!. This is in Firefox browser.
At the risk of patronising Lorna (and sincere apologies if I am), the expanded photos have an arrow to left and right on them that takes you to the next one (I'll get me coat now!)
didds
As soon as I click on to view the image or the additional images, I get asked to log in. With no little cross to close the window. Probably something to do with my increasingly decrepit device. I can get a look via someone else’s, sometime anyway.
Update-I am 'in' now on a different device, yippeee!