That's my problem. I can only send the BCH from the mobile app and my wallet is empty.
I can only see the BCH on the web link
I don't have that wallet, but it should have settings to show Bitcoin (Core) and Bitcoin Cash, maybe in different tabs or settings.
Please make sure you are looking in the Bitcoin Cash area for your money.
Also take a look if that address 12yC1GTuyAL6epEBecT5ZtuWdbHiEFyhcc is present in your wallet. In the BCH area (if any).
Another idea would be to go to
Bitcoin Cash thread and tell there that you bought BCH and it's not visible in your wallet and ask for help.
Maybe somebody there knows the wallet and has an idea what you can do.
As soon as you can see the money in the wallet, ... the other steps are in this thread.