I don't think the issue is with your settings. This should be fixed soon.
Meanwhile you can use the gcloud command to create deep learning VMs:
export IMAGE_FAMILY="tf-latest-cu92"
export ZONE="us-west1-b"
export INSTANCE_NAME="my-new-instance"
export INSTANCE_TYPE="n1-standard-8"
gcloud compute instances create $INSTANCE_NAME \
--zone=$ZONE \
--image-family=$IMAGE_FAMILY \
--image-project=deeplearning-platform-release \
--maintenance-policy=TERMINATE \
--accelerator="type=nvidia-tesla-v100,count=1" \
--machine-type=$INSTANCE_TYPE \
--boot-disk-size=120GB \
--metadata="install-nvidia-driver=True"
See details here.