Not working on my iPhone

Im really annoyed with JTV at the moment because I cant place my orders on this app. Nor on my computer which is an Apple Mac computer. Its been a few weeks now and Ive chatting with customer service and sent emails. I know that I can call which is what Ive been told but thats not the point. For years Ive ordered online or via my iPhone and have so pleased. Now I dont even want to shop...

JTV please fix this...

Shaikitty about JTV Go, v2.4.1