Do not guess. Run the ANSYS License Management Center utility ( ans_licinfo or lmstat ). Identify exactly which product feature is checked out (e.g., ansys , mech , fluent ). Look for keywords like _teaching , _research , _pro , or _entry . Knowing the exact license feature explains the limit.
Sure — here are three concise post options you can use (short, medium, and detailed). Pick one or edit as needed. Do not guess