Locations that are marked in Google Maps but not in Wayfarer map

I have a nomination rejected because apparently there isn't enough information to prove that the Wayspot exists there. It is a post office so it is a valid Wayspot but the only problem is that the post office is not marked in Wayfarer's map but is clearly present in the Google Maps. What should I do now to prove that the post office does exist there?
Also I feel there should be an option to appeal for a rejected Wayspot if an Upgrade has been applied to it. Spending hours reviewing sub par submissions to earn an upgrade then losing it due to Wayfarer's own issue is not justified.
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Show us your full nomination so we can see what the reviwers saw. Without this, we really can't give any advice or suggestions.
This nomination has been rejected due to the following reason(s):
Nomination does not meet acceptance criteria, Insufficient evidence that the nomination accurately reflects the submitted real-world location based on comparison of the submitted photo and map views.
Attaching some screenshots of the nomination and location in Wayfarer map & Google map.