Be aware that there may be more than one species of that genus in the area. The earlier survey may have found only one, but it’s possible that they missed others or they have moved in in the time since. Given the size and location of your reserve, the latter seems more likely. You also can’t rule out that it wasn’t correctly identified in the survey; a lot has changed in taxonomy since then.
Alternately, it may be that they downgraded it because the species can’t be determined based on what’s visible in the photos, even though it could be that species and is likely to be based on the survey. The fact that iNat treats “it could be this species but the photos are insufficient to tell” and “it is this genus but definitely not this species” the same is in part the subject of this long-running thread.
That said, I went through your observations and only saw one that was bumped down to genus.