I haven't received a return label?
Updated
When you have completed your return through our https://www.aimn.eu/pages/register-return, you will finally find your return slip linked to your order (also sent to your email). You print this return slip and attach it to the package, which you then hand in to your local Post Office.
Always save your receipt and ensure that the products you register are also sent with it and that the garments are sent in a fully saleable condition.