I am learning GCP and wanted to create a Kubernetes cluster with instance, here is what I did and what I followed with no success:

First set the region to my default us-east1-b:

xenonxie@cloudshell:~ (rock-perception-263016)$ gcloud config set compute/region us-east1-b
Updated property [compute/region].

Now proceed to create it:

xenonxie@cloudshell:~ (rock-perception-263016)$ gcloud container clusters create my-first-cluster --num-nodes 1

ERROR: (gcloud.container.clusters.create) One of [--zone, --region] must be supplied: Please specify location.

So it seems default region/zone us-east1-b is NOT picked up

I then run the same command again with region specified explicitly:

xenonxie@cloudshell:~ (rock-perception-263016)$ gcloud container clusters create my-first-cluster --num-nodes 1 --zone us-east1-b

WARNING: Currently VPC-native is not the default mode during cluster creation. In the future, this will become the default mode and can be disabled using --no-enable-ip-alias flag. Use --[no-]enable-ip-alias flag to suppress this warning. WARNING: Newly created clusters and node-pools will have node auto-upgrade enabled by default. This can be disabled using the --no-enable-autoupgrade flag. WARNING: Starting in 1.12, default node pools in new clusters will have their legacy Compute Engine instance metadata endpoints disabled by default. To create a cluster with legacy instance metadata endpoints disabled in the default node pool,run clusters create with the flag --metadata disable-legacy-endpoints=true. WARNING: Your Pod address range (--cluster-ipv4-cidr) can accommodate at most 1008 node(s). This will enable the autorepair feature for nodes. Please see https://cloud.google.com/kubernetes-engine/docs/node-auto-repair for more information on node autorepairs. ERROR: (gcloud.container.clusters.create) ResponseError: code=403, message=Kubernetes Engine API is not enabled for this project. Please ensure it is enabled in Google Cloud Console and try again: visit https://console.cloud.google.com/apis/api/container.googleapis.com/overview?project=rock-perception-263016 to do so.

From the warning/error it seems I need to enable Kubernetes API, and a link is provided to me already, wonderful, I then clicked the link and it took me to enable it, which I did, right after I enabled it, I was prompt to create credential before I can use the API.

Clicking into it and choosing the right API, as you can see from the screenshot, it doesn't give me a button to create the credential:

What is missing here?

Thank you very much.