Posting on LT?

I apologize if I am not posting this question in the right place. I have been trying for days to get some listings going on LT. I will type in all the required information for a listing and then add the photos, hit next and get this message with a blank page: "413 Request Entity Too Large". I cannot find a forum or a way to contact them to ask why this is happening. Does anyone have any idea why I am getting this message when trying to create a listing? I see new listings on there daily by I personally cannot get one up and I have no idea why I am getting an error message. Any help would be greatly appreciated..
Thanks in advance! =)
Have you tried a picture resizing app to make your pics smaller? I use I have had that problem and just kept trying resizing my photos. It is also harder to post from my iPad for some reason. Good luck!