Do not rely on a damaged support. Heat and movement can change its stability, and a pan containing hot liquid creates a serious handling risk.
What the observation means
A crack may be difficult to judge under load. A smaller pan does not repair the support or guarantee that the damaged area will remain stable.
A useful next step
Keep that arrangement unused and obtain the correct replacement. Do not weld, glue or pack the support as an owner repair. Confirm the exact model and support position, since neighbouring pieces may have different shapes or locating points.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.