I'm trying to send a BCH transaction and I always get a "transaction invalid" error
If you use a Nano S or a Blue, make sure that you opened the Bitcoin Cash application on your device, not the BTC one. You must use the Bitcoin Cash app each time you wish to transact on the BCH chain.
After I split my BCH, my BTC balance is wrong.
It is a temporary display issue.
Just reset the Ledger Wallet Bitcoin Chrome Application to display all your operations and balance by clicking on Settings -> Tools -> Reset app data
I sent my BTC to the BCH Split Chain
You can refer to this FAQ
My Bitcoin Cash wallet doesn't open
You can refer to this FAQ to know how to manage your Bitcoin Cash wallet. If it doesn't open, check that: