Excited, but I can’t use it to sell my art. – Redbubble - Shop original art Review

A friend told me about this app so I downloaded it but for some reason I’ll I can’t add add any of my art to sell. I’m working off an iPhone XR currently updated. I would really like to use this app it just won’t let me add my own work☹️
Review by yaba baba on Redbubble - Shop original art.