How would they know? Does Ledger not allow the creation of Segwit compatible addresses (starting with a 3)?
They do. You could create such addresses in the old Chrome app and you can still do it in the Ledger Live. If OP told Ledger that he had tried multiple derivation paths in Electrum then that might be why they insist on saying that the address does not belong to his wallet.
I have also tried Electrum and different derivation paths etc and still no joy.
What derivation paths did you try specifically?