When you say Firefly was not working at all, do you mean it would not generate or it was generating images that were not what you wanted or poor quality?
If it was not generating at all, please take a screenshot of the full browser window when you are trying to generate so we can see any error messages or what is happening. Also tell us what OS you are using.
If it is generating poor or unacceptable results, please reply with the following information: • The full prompt you were using. • If you were using reference images or keyframes, please upload those. • An example of the generation(s).