I bought using ETH which was sent from coinbase but the btc address I am using is from Jaxx, am I ok or will my NVOT be stuck?
If you can find the private key to the Bitcoin address that you've entered in the dashboard, you are fine.
1 - What's wrong with using a blockchain.info wallet?
You don't own the private key to your address.
2 - If I use a KeepKey, how can i access my private keys and Is KeepKey a suggested wallet for the ICO?
I don't have a KeepKey, thus I cannot test it. Therefore, it is not recommended. If you can find your private keys, then you should be fine.
3 - What happens if I have 1BTC in my wallet and I send 1BTC to the ICO? I will be left with a 0 Balance. How will I view my NVO tokens on Counterparty?
You invest with address A. You will get counterparty tokens to address A. You import the private key of address A into the counterparty wallet. You will see the tokens there.
Thank you. The KeepKey stores all the private keys but there is no way to view them.