What am I doing wrong? I used the size --ar 70:99 when composing my prompt and once the render was complete I clicked on upscale choosing the 'CREATIVE' option but when the image was downloaded the dpi was just 96 which I am guessing is too poor.

Hi everyone, just wondering if anyone had an order in size A0 or A1 poster using midjourney that you upscaled x4? Was the poster clear? Print Shrimp guidance is that your poster should be 300DPI but I remember one of the videos mentioned that a midjourney poster upscaled x4 will be perfectly fine when someone orders in a large size (even though midjourney images are not 300DPI, I think they are 150DPI).