Poster and still image verification

I am the producer of the film "There is exactly enough time" and I keep submitting the poster and still images for it but they are always rejected

https://www.imdb.com/title/tt14469538

"ReasonUnable to verify. Your contribution has been declined.We have been unable to verify your contribution. Unfortunately we were unable to accept your submission as we were unable to verify the information provided."

So, what do you need to verify the entry? Can you please take the submission, it is correct.

All the best, Virgil Widrich