[Rejected Mission] How to prove public domain/self image is public domain/self image?
I'm submitting collection of missions, each mission has a badge with a bird living in our largest and oldest park in the city. Photos used are either taken by me, or coming from public domain (free to use).
Although 19 missions were accepted, I have 5 that are constantly rejected (like 8 times now). Reason is every time the same - seen below. It's obviously not using any logos, nor claim any officialism ("Ptaki w Mieście" means "Birds in the city"). So the complain is about photo.
Wit this particular example I tried already 2 photos taken by me and two from public domain (I'm changing photo every 2 rejections). Any idea how I can convince NIA photo can be used?
(btw. I'm not a novice, together with my partner we already created and submitted over 250 well-rated missions).