Adobes says the minimum dimension for an image is 4 MP (mega pixels), but i uplouded an image with 2752x1536 and it got "not accepted" for: "dimensions too small", i'm just unlucky?

I do not recognize the screen that you posted. How are you uploading? From a tool? I have never seen the error “Dimensions too small”. Only “file too small”.

Failure during upload means the image data didn’t transfer. 

Try again on a more stable internet connection. 

And another image that i uplouded had the exactly same amount of pixels, and it got accepted… this is nonsense…
Can anyone understand what happened?