did all step with my electrum address & follow adding step from coinomi medium that i should fill the derivation path with M/44H/0H/0H
and the result is "The private keys does not contain any funds" (of course i have no btc on my electrum now)
they got my private key now
i can't claim my BCH now?
and the result is "The private keys does not contain any funds" (of course i have no btc on my electrum now)
they got my private key now
i can't claim my BCH now?

On the addresses tab, expand Receiving, and then expand Used. The addresses under the Used tab will have some Tx number associated with it. Use those addresses to view the private key. I was having trouble with Coinomi and Electrum, but then I realized I was trying to sweep addresses that haven't been used.
This is exactly what i did and i still get the msg that the wallet is empty. i dont know what else to try