I was looking at the small images. Image 2 is a repeat of image 1, not a correct representation of photo 2. Photos 2 and 3 are definitely Blechnum minus, photo 1 is Blechnum nudum.
There could be a glitch. If you click on the 3 images to get the sequence of enlargements the middle picture is then a closeup, but in the small images photo2 is the same as photo 1.