You apparently do not have sufficient privileges to open a service request. Contact your Azure administrator to raise the ticket for you. As per https://learn.microsoft.com/en-us/azure/azure-portal/supportability/how-to-create-azure-support-request
You must have the appropriate access to a subscription in order to create a support request for it. This means you must have the Owner, Contributor, or Support Request Contributor role, or a custom role with Microsoft.Support/*, at the subscription level.
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hth
Marcin