Welcome to the forum, and I hope we can help!
I have trouble addressing a lot of things at once, so will start with the first one. This is indeed a duplicate Wayspot. It is not being used as a Pokestop or gym in Pokemon Go because it is not alone in the L17 S2 cell outlined here:
This mini library is most likely a Pokestop or gym.
You may want to read this topic: Why an accepted Wayspot may not be used in Pokemon Go (S2 cells and Pokemon Go)