The shipping label isn't being accepted because incorrect dimensions and/or weight were assigned to the package. If there is a slight difference in the DIM weight of the label and the DIM weight of the package, please contact Support. We can provide you a new label. You also may have the option of paying for the difference in postage out of pocket. In the interest of getting the package shipped ASAP, this is encouraged.
In the case that an entirely new label is required, SidelineSwap can reimburse you up to the amount paid for by the Buyer, minus non-refundable processing fees.
Please note that SidelineSwap can only reimburse a Seller for offline shipping up to 1 week after the completion of the swap.