Do you have your original seed?
I am wondering if you use something like the bip39 recovery tool:https://iancoleman.io/bip39/
You might be able to find the private key for address that wound up with the funds.
Just a thought, no idea if it will work. If I had more time this AM I would test myself.
-Dave
Here is a test wallet, I sent some
BTC , then sent it to a Doge address, it went through just like how OP explained, there is 0 relationship between the address Atomic wallet sends btc to and the seed, I tried all different combination like using Doge's PK to magically generate a BTC address, nothing worked, the address they send to is pretty strange
12-word BIP39
warfare thrive wing behind tired muscle outside uniform swim edge matrix wolf
Doge Address which BTC was sent to:
D95aC8TEQrbCRWqFVhYHzSj17uB7s8yd74
Doge's PK
QRw8xX9VAw67f9db8hqbN4EAWrj3Cwu1jZHDgoR6hg2nKBaKc7gD
BTC addresss Atomic (magically) sent to
14wUesWb7SgutWeem7YjSgZQEmSpUWKPm1
My atomic BTC addy (m/44'/0'/0'/0/0)
15m149RV3JicusAUs4Koeg5TUboPvnroY3
BTC addy PK:
L4nrgmSr8ZDjtfbhJbX8xo2cUN7hEaPwGnTLnbHNDEfKbk5aw5CH