EZ Product options & variants

The app is "okay" in my opinion. the conditional logic doesn't work all the time. and when my customers upload their images, sometimes it gives them a link in cart that they can click, sometimes it doesnt. also, sometimes it gives me a preview in the shopify admin, sometimes it doesnt. I'd love to give it 5 starts if those items could be fixed. i am still using the app for now until I can find an alternative. its functional, just glitchy.