Hi,
First, I'm Jerome, not Nicolas ; thanks.
Second, I have fix the fact that your order statuses were broken, but I didn't change the configure of your HikaShop for all elements (configuration / payment config / shipping config).
I should explain it better (but it was late and I was tired), I fix that:
I see this also in the main configuration and i am not able to change it.
So now you can see your order statuses in the backend and you are able to change your configuration to something working.
Regards,