I was going to say maybe it was because you don't have a PS5 linked to your account (why that would matter I don't know but I'm not overly familiar with the Playstation website/store, I mostly buy through my console if I'm going to buy games digitally and have only visited the site a handful of times) but I just logged into my account on my PC (using Firefox none-the-less, works fine for me with everything showing up properly (even shows the remake as free for me)) and it'll allow me to pre-order both versions for the PS5. Starting to think something is up with your account or maybe the site just doesn't like you.