Put the tool or activity, the action, and the observable result in the title. “PDF export blurs small text” gives helpers a starting point; “Help needed” does not.
Keep the title short enough to scan, but do not hide a crucial distinction such as mobile-only or after-upload. Avoid account details and guesses about the root cause. If the discussion changes direction, update the title to match the solved issue.
What result are you seeing?
Akousa