It's a known issue with esellerate and older orders. You're probably putting in the SKU rather than the serial. The reminder should look like this:
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ORDER NUMBER: ST31006335
ORDER DATE: 11-AUG-05
Status: Fulfilled
Qty: 1 [SKU56807664159] Mount&Blade License and Serial Key at 7.13 GBP
Mount&Blade Serial Number:
Serial Number: XXXX-XXXX-XXXX-XXXX
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But it looks like they changed their systems circa 2007 and lost the info, so trying to recover now brings you:
----------------------------------------------------------------------------------
ORDER NUMBER: ST31006335
ORDER DATE: 11-AUG-05
Status: Fulfilled
Qty: 1 [SKU56807664159] Mount&Blade License and Serial Key at 7.13 GBP
-----------------------------------------------------------------------------------
Note the missing serial number.
Email esellerate (
[email protected]) and tell them the serial recovery just returns the order info (include it so they can track the order) and they'll sort you out.