Customers who bought items from Made.com before it went into administration are being advised to submit a claim to get their money back if their order doesn't arrive by November 25.
Administrators PwC say nearly 4,500 orders in the UK and Europe are already with carriers. However, they told the BBC that "a large proportion of customer orders" will not be fulfilled.
They have said that around 12,000 outstanding orders will not make it to customers. Those who do not receive orders by the deadline date may be able to get their money back through a Section 75 claim.