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1. Browse the known issues section or check if another user previously posted about a similar issue.
2. Upvoting posts help us understand how many players are experiencing the bug.
3. Refer to the Best Practices to learn how to write a bug report.
4. File each issue separately if you’ve encountered multiple issues.
Some Wayspot requested and approved prior to Niantic's notice that the app was not last synced.

in Report a Bug
Before the announcement about the Wayspots requested and approved by the application, after at least a week and a half after its launch, it stopped synchronizing the accepted Wayspots, they are accepted in the system, check out the following images:
That's right, the indicated Wayspot is "free" from any proximity to the others, therefore, he was supposed to be in the game for a long time. NOTE: This nomination was made from a Niantic Lightship form.
Comments
The same thing happened to the user::https://community.wayfarer.nianticlabs.com/discussion/38508/poi-not-appearing-ingame#
Artesian well ecologic coordinates: -21.083542,-40.843553
I also made a request through the Niantic App and it was accepted, but it didn't sync, here are the screenshots from that Wayspot as well:
The location (coordinates) of this Wayspot of the Meu Lar Water Tank I:-22.633479,-43.236917
@NianticGiffard
To tag or someone at Niantic review these non-synced Wayspot in Niantic games.
Nominations that have been submitted through the app are provisional and there is no guarantee that they will make it into a game even if they meet the gameboard rules.