Recent rejection but is legit…issue might be cause new?
Sorry pics may not be in order. Our local park has new additions so definitely would be eligible for pokestops but this one was rejected because they said location couldn’t be found. It was added June 2021 so of course it won’t be found on the map. I had another one added with no issue and have another in voting. (I submitted 3!different locations) This one just came back rejected today and I’m dumbfounded since I said in the supporting info that is new. Not sure what I can do to help the reviewer understand this.



Comments
Consider uploading a photosphere though the Google Street View app that shows the sign.
If it's so new, you definetly need to add photosphere like okto345-ING wrote.
Or at least make support photo in a way that your nomination will be seen with some older object that is easy to be recognisable from this location, so reviewers will be sure it's here. But in this case it might be hard to make photo like that (trees aren't the best thing you can show, and other things seems to be a bit far away from it. Photosphere made a bit further from this location might be the best idea (so it will show your nomination and big part of area near it). There is old streetview in this park, that don't show your nomination (like map view too), so it would be best to add photosphere that would proove it exist here :)
But you must know that you should choose if you want to nominate this sign or playground. Only one of them could become a POI - first, because it looks like sign is part of this playground, so uf playground is a POI, sign would be a duplicate of it. Second, because they're so close to each other, that even if someone would accept both nominations, one will be autodeleted as it will be too close to another POI.
Good luck with renominating it, I hope it will be accepted next time :)