All the observations you mentioned appear to me to have the same lat/lng/accuracy. When I click on the pin I see this observation https://www.inaturalist.org/observations/92544576 which has a location in the same location as the pin. When multiple observations overlap completely or almost completely, they are represented on the map as a single pin, until you zoom in far enough that they can be distinguished from one another. We choose the most recent observation to represent the pin when clicked on from the map, which is why they coral fungi observation is what you see when you click on the pin.
I’d double check the lat/lng of your observations if you think they should have different locations. Or perhaps I’m misunderstanding. It would help if you could link to specific observations if you think the map is not representing their location properly.