Just checked and I do see that photo on your photos page now. Maybe it took too long for the photos page to be updated? Micro.blog does first update posts on the home page and then the photos page separately, so there can be a delay. (But usually seconds or minutes.)
Let us know if you still notice any problems.
Hmmm. Strange. Maybe then it was my tweaking with the config, I used to have a plugin installed that somehow modified the photos page (and apparently made the link to “photos” disappear on z428.micro.blog altogether as well). So, anyhow, consider this fixed now, will keep an eye on that. Thanks.