Incorrect credit charges for GPT Image

I am having the same but confusing issue. currently have an annual Adobe Firefly Pro Plus subscription, which offers unlimited image generation at 2K resolution at no additional cost under the included plan benefits, including gpt image 2.5 (low/med/1k/2k). However, I am experiencing a confusing issue when using GPT Image 2.5 Sunburst and flair.

When I select **2K resolution + Auto orientation**, no credits are deducted, but the output appears to be only 1K. However, selecting 2K with a fixed orientation, such as **16:9**, results in credit deductions and output image is 2K without issue (but credits charged even in unlimited category).

Why does changing the orientation affect credit usage, and why is the output not actually 2K?

Adobe, please resolve this issue as soon as possible or provide a clear answer on whether a fix is possible. My refund request deadline is November 1, so I need a definitive response before then.