Thank you for using the Microsoft Q&A forum.
The issue with your deployed model generating intermittent fixed tags for different users could stem from several areas. First, ensure that the model is properly trained and validated to handle varied inputs. Check the REST API configuration to ensure it correctly processes the input URLs from Azure Blob Storage. Additionally, verify that Power Automate is consistently sending the correct input and properly handling the ML service's output. Finally, examine if there are any differences in the environment or permissions for the users' experiencing issues. Please share any error logs or specific examples to assist in further troubleshooting.