I’m not sure which obs you’re referring to. If you can provide some URLs maybe we can investigate. The “missing / broken” observations @pisum linked to above all seem to be working for me. I can see that you have a number of “orphaned” photos, but it’s impossible for me to tell which of those were intended to be included in observations but weren’t, which ones were accidentally duplicated but the duplicate ended up in the observation, and which ones you uploaded and then intentionally removed without adding it to an observation.