I keep seeing my credit balance decrease when the task I asked for (remove a section of line or make a section of line thicker) wasn't completed. I'm happy to pay credits for image generation but it needs to be an actually different image. Out of these images only 1 is different.
If you want me to stay around as a paying customer then implement some sort of diffing mechanism that doesn't deduct credits when the image isn't different from the previous one. You can use that data to build out a better and more reliable system, it should be a win-win.

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