Even though the command to collect logs succeeded, I dont see the aforementioned blob created with logs.

Deploying aks-periscope

Your logs are being uploaded to storage account activateazure2diag

You can download Azure Stroage Explorer here https://azure.microsoft.com/en-us/features/storage-explorer/ to check the logs by adding the storage account using the following URL:
https://activateazure2diag.blob.core.windows.net/aksaspen2-dns-22701a84-hcp-eastus2-azmk8s-io?sv=2019-02-02

But there is no blob created. Any idea?