Bug Reports should include the following and any additional information you feel is necessary to aid in the investigation of the bug.
Hi @JonasRoebi
Willkommen im Forum 
Bedeutet dein Report, dass du einen wayspot Vorschlag akzeptiert bekommen hast und nun >48h erscheint er noch immer nicht in Pokémon Go?
Hello and welcome,
First off, it can take up to 48 hours for Wayspots to appear in games.
Second, this may not be a bug, but rather the density/inclusion rules for PoGo coming into play. PoGo uses S2 cells to determine stops, with 1 allowed per L17 S2 cell, and it’s possible that the cell may already be occupied. More info on S2 cells and PoGo can be found here:
https://pokemongohub.net/post/featured/comprehensive-guide-s2-cells-pokemon-go/
While we don’t have an accurate map to check Wayspots, we can certainly see if it may be in an occupied cell. Please feel free to provide the title and location of the Wayspot in question, and we’ll be glad to take a look.
Hey,
Thank you for submitting a Wayspot nomination! While some nominations may be deemed eligible by the community of reviewers on Niantic Wayfarer for inclusion into Niantic’s location database, they may not necessarily be added into every Niantic game.
After a nomination is approved by reviewers, there is an additional automated review that determines whether the nomination is an appropriate fit for each particular Niantic game. Each game has their own set of criteria for this step, so some nominations may be accepted into one game but not another.
The most common reason that an eligible nomination is not added to Pokémon GO is because the nomination is too close to existing PokéStops or Gyms. If an existing game location is removed or the criteria changes, the nomination may appear within Pokémon GO at a later time.
Please keep in mind that while this is a common reason, it is not the only one.
Thanks,