I tried creating a wallet with just that address, entering the simple password (WIF), but I don't know why Electrum associates it with an address other than the one containing the funds.
You have to specify the address script type when importing private keys in electrum. So if the address begins with bc1 you have to enter "p2wpkh:" followed by the WIF. If it begins with 3 then try prepending "p2wpkh-p2sh:" before the private key. If you still don't understand click on the "info" button on the private key entry step to see examples.