Plex <> TheMovieDB not updated?

I did add some movies to the MovieDB and at some others I did add posters.

This was last weekend and this information will still not show up in PLEX.

I did remove metadata and select the correct movie again. Still the old information or no poster.
Also a re-add of the library wasn’t the solution.

Is there a kind of dealy between Plex and MovieDB of some days, I did this all last weekend?