Error when push IKO to docker hub (on MacBook M1)

LS,

Probably due to my MacBook M1, but when I try to push the IKO (step 3 in the install) to the hub, I get the following error message:

The push refers to repository [docker.io/library/kubernetes-operator]
6515fe38e1f1: Preparing
f562a1750889: Preparing
denied: requested access to the resource is denied

Is this indeed because of my MacBook architecture or is there a different reason?