It says that WR requires splits and video but when you submit a run, you need to put a video. Is that supposed to be like that or is the video supposed to be just for WR?

That might've something Cosmoing changed when I made them a mod of this game, and the rules may not have been updated to reflect that. This being the only real DS game I mod, I didn't want video requirement due to knowledge of how hard/expensive it can be to get a credible DS vid, but for now if you can try your hardest to get a video of acceptable quality on your phone or smth then that would be best.