What to do with this order?

Hello, I recently sold something on Vinted. It weighs approximately 6-7kgs, but on the shipping label it says the weight of my parcel can’t exceed 2kg. The buyer chose DHL as their shipping option. Will this become a problem or is there a chance it’ll go through? And if not, can I change the weight somehow? I put it in the correct category AND chose the biggest/heaviest option, I know this for sure. So I’m just confused why they would put the weight limit so low.

Some extra information; both me and the buyer live in the Netherlands.