you are using the old private keys - not those for the address you moved your bitcoin to, right?
what server are you connected to exactly?
you need to connect to a bitcoin cash server not a bitcoin electrum server.
i tried casharia as described below:

I think half and half but it doesn't mean not to use really electronic cash. For as long as it is useful regardless of the source of the cash. We as people are not hyprocrites to disregard money because that's how we survive daily. What's more necessary to us is how we can manage ourselves in giving importance on what we do everyday with that cash inlvove in us. If the company uses electronic cash, so be it. You can't choose your own if you need a job so just work and be contended so that you can have or get your income by means of electronic cash.