The problem’s likely to be file size. Make sure your file meets the following submission requirements:
Minimum size: 960 x 960px
Maximum size: 2040 x 8160px
File formats: PNG, GIF or JPG
Color mode: RGB
If you’re still having problems, try clearing your browser’s cache, checking your network connection, and testing for the issue using a different browser or computer.
Still stuck? Try contact our Designer Support Team to help troubleshoot.