the rewards will be given to you to your Quma account and then you will be able to apply them on any of the service partners we have, for example ride sharing, food delivery, travel etc. Therefore there is no need for a card.
I understand your skepticism however soon we will be able to also show the credibility of our processing system and also we will be audited by the German Government (BaFin).
In further details we want to remove this card based system that currently exists be it AMEX card or any other royalty system and the only way is if we go from source to consumption (bank acc to service partner providers)