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
Oh, you mean the 12 words passphrase for my atomic wallet, is that the original seed? Sorry, not an eypert myself... If that is so, yes i do. And yeah, never used the tool.