<span style='font-size:11pt;line-height:100%'>From my experience, two things.
First: they were used to having their underground stem (mistakenly termed "bulb") held tightly by the media, and deeper than they are now. Their previous environment inspired them to produce decumbent leaves and these are most usually reflexed against the soil/media. Presently they are not deep enough, nor are they being held at the proper depth by their current media which appears to be loose, and dead long fibered Sphagnum (LFS). <span style='color:red'>##This is normal, the media will eventually settle and they will grow to be at the depth they prefer in your conditions.##</span>
Second: old leaves do not usually make any major changes to adjust to a new environment (the old dog, new tricks cliche). You will need to wait until the new leaves have grown, they will show how they appreciate their new environment, and from what I see in your nice photo, you should not have to wait very long. <span style='color:red'>##They appear to be coloring up nicely and starting new leaves. Good job.##</span></span>