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This device was purchased from an official reseller and had not been used by anyone else before. It came in a brand new, unopened box and was completely sealed.
In that case, do what
I've recommended to contact Ledger and inform them of the situation and the mention the reseller where you purchased it.
Because it's not safe to use that device if it generated a seed phrase that's been used by another user.
They might even replace that device since it should still be under warranty.
Users here in the forum wont have the means to help you with it since they'll need the actual device and specialized equipment to test.