www.artmajeur.com review: I don't know how to delete account 1

I registered on the website www.artmajeur.com in order to show and sell and show my art works. I have a lot of problems with this website, because it was difficult to upload my photos and when I finally decided to delete my account, I couldn’t do it. It was nightmare, because they didn’t indicate how to delete the account on the website. And they didn’t react to my emails. I wonder if there are people, who can help me.