Vinted IT - Shipping Costs incorrect of my listed offers (too high)

Account "Mucclaudia"
**Subject: Shipping Costs incorrect of my listed offers (too high)**

Hello,
I have created several offers each time the shipping costs are not loaded correctly (showing €465 for a parcel of 5kg! - see example attached. I have deleted and re-uploaded my offers multiple times, and I have enabled all available shipping options.
I would like to be contacted by customer support, as I am unable to find an email address or phone number on the website.

Thank you in advance for your help.

Kind regards,
***** Müller