Why I can not update Cover Artwork?
Please check your Artwork File:
Cover size: Minimum Size: 1400x1400 pixels / Recommended Size: 3000x3000 pixels
Color mode: RGB (don't accept CYMK)
Format: JPG (We dont accept any other formats, If you have PNG or TIF file format, please don't change name from .png to .jpg, you need to use special converter)