i did try that step by step guide and no, didn't work

Keep getting told I have a zero balance - even though the blockchair block explorer shows I do have a positive balance of BCH

I think this thread may die off now - because this blog post has been released by blockchain.info:

https://blog.[Suspicious link removed]/2017/08/22/bitcoin-cash-update/

Also, the user comments in this blog post are describing my exact problem...   it must be because it's an imported address (which holds 90% of my coins)
Plus, I've moved them after Aug 01 (so as not to have my 12 word seed fall into the wrong hands) - this also seems to be a problem

Might have to wait the 8 weeks for BC.info to release their own tool   :-/

https://blog.[Suspicious link removed]/2017/08/22/bitcoin-cash-update/

blockchain are finally going to roll out a native fix, by the looks....

so the comments section of this blog post, seem to exactly match what I've been describing...      and because I have moved coins (prior to giving a 3rd party my wallet seed! why wouldn't you?!) - it now looks like it's impossible for me to get the BCC...       god's sake

http://www.coinpurveyor.com/how-to/how-to-claim-bitcoin-cash-from-blockchain-wallet/

I there - I did try that, and no - unfortunately it didn't work
When you try entering in a compressed private key, you can't even click the button 'Sweep' (it's greyed out) - but when you enter the longer (standard private key) it's no longer greyed out & you can click it

But, no - didn't work....

Hello there,
To try and give as much info as possible - here is the background to where I'm at now....   

First bought bitcoin in early 2014, have been using blockchain.info as my wallet (with 2FA & all the extra security)
Back then, HD wallets weren't around. 90% of my bitcoin was held in a single address.
Years later, I log into BC.info and get told that HD wallets are here & would I like to upgrade to one - and transfer any old addresses into this HD wallet. Yes, I do that.
In hindsight, I now realise BC.info imported this old address - but I don't think it fully 'transferred' the funds into the HD wallet - it merely became a custodian for the address, if that makes sense.
The recovery phrase for this old address, was more of a hash for the password to it (eg way more words than are used in a modern, 12-word wallet seed)

So before I start anything with trying to claim my Bitcoin Cash (BCH) - I decide it would be prudent to create a new wallet & move all my coins there. That way if any website for BCH is dodgy, I will only be exposing my wallet seed for a now empty BTC wallet. (but I'm figuring the transaction history will still be there to prove my ownership of BCH)
When I move my funds, I notice I have to do 2x separate transactions - one for the 10% of my coins held in the new HD wallet - but almost as a separate 'balance' I have to do another transaction for the 90% of my coins that were from the old (non-HD) address. I couldn't do it in one go.  Anyway, that's done now. Coins safe.

I have used BCH block explorers (like Blockchair) and they confirm that I hold a positive BCH balance from that old BTC address (that had 90% of my coins in)
I first use the BTC.com tool, that was mentioned in a recent blog post. This worked fairly successfully, in that the 10% of my BTC was credited into BCH (which was newer, and from the HD wallet format) - but it didn't credit the other coins in that old address.
So then I try downloading the Electron Cash wallet - and using the private key (that I can get from BC.info) I use the tool for Wallet/Private Keys/Sweep - and I get a message back saying there are no inputs.
I also try using the Android app Coinomi - and much the same thing happens, I use the private key and I get told Zero balance

So how can I have a positive BCH balance on block explorers (which confirm I had a funded wallet pre-fork) - and I have the private key for this address....    Yet I still can't get access to my BCH

If anyone can give me some pointers, I would very much appreciate it! 
Thanks for reading

In fact - first correct answer to this, that results in me getting access to my BCH (and I will probably have to check back tomorrow, now) - I promise that if I can successfully get my BCH - I will send that person $50 worth of BCH (at whatever the exchange rate is when it's solved).   

I there, if you could help me out I would very much appreciate it...

I have a bitcoin address which held a positive balance of BTC at the time of the fork.
I check on Blockchair.com and it is showing a BCH balance too
I have installed Electron Cash & followed the instructions - and when I "Sweep Private Key" - it says "No inputs found"
I have used the suggested bitcoinwallet address website and used a compressed version of my private key (both types) and still no balance showing in Electron wallet

So...  I have the public key showing a positive BCH balance on Blockchair.com
I have obtained the private key for this address from Blockchain.info wallet
And still cannot access my BCH...

What could I be doing wrong?
thanks