ResourceLimitExceeded exception but I have Quota

I am not able to to start a SageMaker notebook neither a SageMaker training job with ml.c5.xlarge (or any other instance type). I checked on "Quota Services", and I clearly have quotes for both tasks.

• 1 in "applied quota value" for "ml.c5.xlarge for notebook instance usage".
• 15 in "applied quota value" for "ml.c5.xlarge for training job usage".

Of course I am checking in the same region I try to work: "us-east-1". I have researched for several days, and all forum suggests to ask for a limit increase. Nevertheless, I already have quota (limits) available. Nevertheless, when I try to start the Jupyter notebook, it raise the exception The account-level service limit 'ml.c5.xlarge for notebook instance usage' is 0 Instances, with current utilization of 0 Instances and a request delta of 1 Instances. Please contact AWS support to request an increase for this limit. It is strange because the exception says that I have a limit of 0 instances, while the quota list services says I have 1.

Here's the output of the command service-quotas list-service-quotas

        {
            "ServiceCode": "sagemaker",
            "ServiceName": "Amazon SageMaker",
            "QuotaArn": "arn:aws:servicequotas:us-east-1:631720213551:sagemaker/L-E2BB44FE",
            "QuotaCode": "L-E2BB44FE",
            "QuotaName": "ml.c5.xlarge for training job usage",
            "Value": 15.0,
            "Unit": "None",
            "Adjustable": true,
            "GlobalQuota": false
        },
        {
            "ServiceCode": "sagemaker",
            "ServiceName": "Amazon SageMaker",
            "QuotaArn": "arn:aws:servicequotas:us-east-1:631720213551:sagemaker/L-39F5FD98",
            "QuotaCode": "L-39F5FD98",
            "QuotaName": "ml.c5.xlarge for notebook instance usage",
            "Value": 1.0,
            "Unit": "None",
            "Adjustable": true,
            "GlobalQuota": false,
            "UsageMetric": {
                "MetricNamespace": "AWS/Usage",
                "MetricName": "ResourceCount",
                "MetricDimensions": {
                    "Class": "None",
                    "Resource": "notebook-instance/ml.c5.xlarge",
                    "Service": "SageMaker",
                    "Type": "Resource"
                },
                "MetricStatisticRecommendation": "Maximum"
            }
        },

I strongly appreciate your help, because I have no way to open a SageMaker training job for several days. Thanks.