Now I'm on the delegators list (after 12 days). Thank you.
Maybe it's a manual process?
As I said, I just delegated 1 HP for test reasons, so it's not a big deal. But I am worried should I delegate said a greater amount of HP and being unnoticed for more than a week.
Im not sure on the display thing. But I'm sure that if you delegate, you will get rewards for sure. Actifit has more than 230k delegation since last 4 years.