I've tried to post images from both computer and idevice and it says the same thing. I was able to remove some attachments that Ace said how to, however there are still attachments I have no way of deleting. There has to be something wrong with the attachments. I'm not wasting time posting images to imgur and then sending here, when it's 10x faster here, plus I can't resize images so it takes up a big amount of space. I'm just happy I'm not the only one with this problem.
I probably would have put this thread in a different place, not Era, but oh well.