I've had two letters surcharged due to "invalid stamp".
On both occasions, I've paid £2.50 to see what it was that had the fee owning.
I can't see why this stamp is invalid - any ideas? Both items were DL size envelopes with valid looking stamps on them.
Were the letters too thick or too heavy? Does the 'bar'code scan with the Royal Mail app?
@jellybaby started
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I've had two letters surcharged due to "invalid stamp".
On both occasions, I've paid £2.50 to see what it was that had the fee owning.
I can't see why this stamp is invalid - any ideas? Both items were DL size envelopes with valid looking stamps on them.