Its lower position and opening path can make it sensitive to plinth height, floor changes or panel alignment. The upper door moving freely does not rule out a lower fitting problem.
What the observation tells you
Forcing the door over the obstruction can damage the panel or leave the freezer partly open. Removing the entire plinth may also affect the intended ventilation arrangement if it is refitted incorrectly.
A useful next step
Record the exact contact point and any recent changes. Keep the door closed gently if possible and obtain competent fitting advice rather than trimming components without the installation specification.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.