It must engage the pan securely under load. A similar outline or width does not prove that its locking features match.
What the observation means
The risk becomes apparent when hot fat or food is being moved, so a casual empty-pan fit is insufficient evidence. Manufacturer-approved accessory information should identify the correct combination.
A useful next step
Keep the pan and cooker references when obtaining a replacement. Do not modify hooks or use pliers as a temporary handle. If the pan cannot be handled securely using its approved method, leave the grill unused until the correct arrangement is restored.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.