Trying to export a PNG sequence in Animate, but DPI won't stop changing

I've been using Adobe Animate to make animations for a video game for a while now, but I just ran into this weird problem today, and was wondering if anyone would know what to do. I usually export the animations (or graphic symbols, rather.) as PNG sequences so I can get each and every sprite on its own frame. It was working fine before, but now the DPI and Pixels can't stay put: When I change the size of the images (The pixels) it turns the DPI to 1. When I change the DPI back to 72, it makes the images 4 pixels by 4 pixels. Does anyone know what I should do? Is there a setting I have to change?