Describe one issue clearly
Use a subject that identifies the product and symptom. State what you expected, what happened and when it started. Include the order or license reference rather than opening several unrelated tickets.
Attach useful evidence
A short error message or redacted screenshot is often enough. Remove passwords, tokens, private keys and unrelated personal details. Include operating system and software versions when they affect the issue.
Keep the conversation together
Reply to the existing ticket when new information appears. If the problem returns after closure, reopen it with a clear description of the new behavior. This preserves context for the support team.