If check of your recovery seed was successful, a different passphrase is the only way how you can access a different (empty) wallet with different addresses. Please, check this thread and watch the video where it is described: [VIDEO] Passphrase manual and explanation
ETH address remains still the same for specific ETH account (within the same wallet) as ETH uses “account” model. However, BTC uses “UTXO” model in which you can generate a new address every time the previous address is used. Difference between “UTXO” and “account” models is described here: UTXO vs. Account Model