Yes, welcome
You have joined on 7th August and already two of your sent cards are registered, that’s good, right?
Two cards are on their way to you, maybe third one also, just in case.
People do register their cards, as you see with your sent ones.
You can send additional cards even when the cards would not be registered - after 60 days the card expires, you get a new slot (the card can get registered after the 60 days, so it’s not “lost”).
But, yes, there are members that disappear. Something else comes up, a baby borns, a nice partner appears and mesmerises you, new job gives no free time, a sudden moving, no interest. Sometimes they come back. I always think they still mostly get my card, so no money is waste in sending. And in return, some cards to me are lost, so I waste others time and money.
Like I wrote earlier, if such moderator registering should happen, I wish it were different “column” to them, maybe a temporary one, so that if/when the person comes back, they can register the card for real, and it will look as sent and received.
And think, you are new, sometimes member suspect new members disappear, and worry their card won’t get registered. Would it feel nice and ok, if people think this about you, and that they won’t send the card at all, because their cards will be registered eventually. So you would not get a card, only notes about a registered card would be added to your list later when you were bored and leave when you don’t get anything.
So, don’t only think your cards are maybe not arriving and you are penalised, but, to someone, you are the possible not-registering, soon to be disappearing, suspicious looking member. I wouldn’t want this kind of thinking happen any more than it now does nor encourage members not to send the card because there is the back-up of automatic registrations.