Why did my PokéStop nomination get accepted, but never added?

[TjoeMi]

Hi, You must first understand that not all wayspot will become pokestop/gym.

Below link can explain how s2 exclusion rule work in pokemon go.
https://pokemongohub.net/post/article/comprehensive-guide-s2-cells-pokemon-go/

In the other hand, unused wayspot might become power spot. So your submission is not entirely wasted. You can read more about power spot here.

Clarifications on Pokémon Go Power Spots

Hello Explorers, In response to the widespread interest in this subject, the Wayfarer and Pokémon Go teams came together with some response to your main questions. Let’s first align on the terminology. In Pokémon Go, those new locations where you can experience Dynamax and Gigantamax are called Power Spots. They are different locations than Pokéstops and Gyms. Where are Power Spots coming from? How are Power Spots chosen? Similarly to Pokéstops and Gyms, Power Spots are built upon the Nianti…

If you share location detail, we can check if its under s2 exclusion rule or not.

Have a good day.