Has Model 2 been recently adjusted along the way?

We feel that the variety of images generated by Firefly model2 is less than it used to be, and that what was previously possible to express using model2 is now being translated and expressed in a way that is completely different from what we intended.
Also, the quality of style reference reproduction seems to be lower than before; when we reference an image generated by Firefly, the image looks like a rough resolution photo. Before, it was possible to reproduce the image beautifully to some extent.

Have you recently adjusted the model2 model in the middle of the process? Is the model2 model no longer available before adjustment?
Or have you used up your credits (but I am an unlimited user) and this has limited your GPU usage?

I use it to create images for my regular work, so I would be very annoyed if the model adjustments change what the prompt reflects.