That's a weird pad. You either have it upside down or it isn't the right kind. That looks like it'll put a ton of stress on the pinch weld, which is not good and how you get rust.

What kind of floor jack are you using?

Return that one and get something that looks more like this https://www.amazon.com/Seamaka-Universal-Adapter-Protector-030-1pcs/dp/B09NKQVYKL/ref=sr_1_24?crid=1YLM4MAQ606Q