Something wrong with your shipping label? You can usually make changes yourself in Seller Hub.
Use this guide to find the right next step, with more detailed instructions further down.
| What's wrong? | What to do |
| Return address is wrong | Update it before generating the label, or Contact Support if the label has already been generated. |
| Buyer's address is wrong | Contact Support for help with a new label. |
| Label or packing slip size is wrong | Regenerate the label in the correct size before drop off. |
| Package weight or dimensions are wrong | Adjust the shipment in Seller Hub before drop off. |
| I need to bundle items | Bundle the shipment in Seller Hub before generating the label. |
| I need to unbundle items | Unbundle the shipment in Seller Hub before the original shipment is marked in transit. |
| Need to change the shipping service | Adjust the shipment in Seller Hub (if eligible) before drop off. |
Check below for detailed instructions.
Note: Complete the steps below from the Shipments page on whatnot.com. These steps aren't available in the app.
Return address is wrong
If the shipment is marked Needs Label:
- From the Shipments page, open the Sidebar.
- Under Default Label Options, update your Return Address.
- Generate your label.
If the shipment is marked Ready to Ship:
You can't change the return address on an existing label.
If you need to change the return address before sending a package, contact Support.
Buyer address is wrong
Sellers can’t edit buyer addresses.
Contact Support for help correcting the address and generating a new label.
Label or packing slip size is wrong
You can change your label or packing slip size before you drop off the package.
If the shipment is marked Needs Label:
- From whatnot.com, open the Shipments page in Seller Hub.
- Open the Sidebar.
- Update your label or packing slip size under Default Label Options.
- Generate your label.
If the shipment is marked Ready to Ship:
You can regenerate the label in a different size.
Note: Labels must be regenerated one at a time.
- From whatnot.com, open the Shipments page in Seller Hub.
- Open the Sidebar.
- Update your label or packing slip size under Default Label Options.
- Save your changes.
- Find the shipment and tap the pencil icon to edit.
- Scroll down and select Save Changes to regenerate the label in the new size.
Package weight or dimensions are wrong
You can adjust the shipment and replace the label anytime before you drop off the package.
- From whatnot.com, open the Shipments page in Seller Hub.
- Select the shipment.
- Select Edit Shipping Details (before label generation) or Generate New Label.
- Update the weight and/or dimensions.
- Review updated costs under Shipping Costs → Pending Adjustments.
- Select Save or Generate New Label.
Items need to be bundled or unbundled
Bundle items
- If the shipment is marked Needs Label: You can bundle items into one shipment → How to bundle.
- If the shipment is marked Ready to Ship: Bundles can’t be changed. Ship items separately using the labels you've generated in Seller Hub.
Unbundle items
- If the shipment is marked Needs Label: You can remove items from a bundle → How to unbundle.
- If the original shipment is marked Ready to Ship: You can unbundle items to create new shipments and labels → How to unbundle.
Shipping service is wrong
Shipping services are usually determined by your show's shipping settings and the item's shipping profile. In most cases, the service can’t be changed after the item sells.
In some situations, you may be able to update the service after a sale, typically by adjusting the package weight or selecting another eligible option (like USPS Flat Rate).
To update the shipping service:
- From whatnot.com, open the Shipments page in Seller Hub.
- Select Edit Shipping Details (before label generation) or Generate New Label.
- Update the weight to change the service, or select another eligible service (e.g. USPS Flat Rate).
- Review changes under Shipping Costs → Pending Adjustments.
- Select Save or Generate New Label.
Note: Some services can’t be applied after the item sells, including USPS First-Class Mail Letter and Free Pickup.
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