Thanks for the advice. I discovered the challenge a little late (but managed to get it in before the contest ended) and posted as soon as I finished. It was in the Queue. I'll msg Skamocore and see if it can be added.
Your pixel has to be approved by one or more people. It probably got missed which is a pity... I had a similar issue, I submitted mine one Tuesday I think, and it only entered the challenge yesterday. Next time make some noise, and let yourself be heard, or maybe post it a little earlier, just to be safe. Maybe the PJ admins will include nonetheless?
Just curious. I posted my prior to the deadline, but unfortunately I do not see it on the voting page. Did I my submission get missed or did it stay too long in the public queue?