Image preview dimensions - Please help!!

I am new author here, I submitted my PowerPoint template here first time, image preview dimension was 595 x 692 px but I needed to more add slides screenshot in order to get more details, the dimension is 590 x 8149 px, so I re-submitted image preview only yesterday, got approved but I see now there is no update image preview still same old image dimensions,

Why is that so? Does this new dimensions went wrong?

See attached screenshot that I want to upload to image preview.

Please advice.

Thanks

dont worry buddy this is normal lol