I downloaded version 2.0 to give it another go since the comments from the product page were removed. I inserted my API key from chatgpt, I set an output folder, I used the exact prompts and settings from the product page (2D medieval game assets, etc, etc) and I just get the same "Error generating images" error that I have since I purchased this tool. One would think it's a fairly intuitive process to set up but clearly there's got to be something off if it's not as simple as it appears to be. Is there a step-by-step setup guide?