Yes. Without reliable care information, it may be unclear whether the item was suitable for the selected treatment. That uncertainty should be stated rather than filled with a guess.
Understanding this situation
The appliance's performance and the garment's compatibility are separate questions. A sensitive trim or blend can matter even when the main fabric seems familiar.
A useful next step
Seek the item's manufacturer guidance where possible and retain the settings used. Do not repeat potentially damaging trials to prove a fault. Report any abnormal appliance heat, smell or warning separately from uncertainty about the textile.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.