I was trying to build an email and when I was trying to insert pictures, it kept showing me "Invalid Image URLs" whether I'm choosing pictures from Design Studio or uploading pictures from my computer.
I've been tried
1. upload .png/.jpeg/.jpg images from my computer, with NO spaces in the file names
2. choose .png/.jpeg/.jpg images from Design Studio, with NO spaces in the file names
3. both Chrome and Safari browsers
I can insert images with external URLs but that way I can't control the dimension of the picture, it might be squished in my email template.
Any suggestions would be appreciated. Thanks for helping me out!