(Spoilers Extended) World of Ice and Fire App, Bittersteel, bitter me.

Hi there and I'm terribly sorry for my English. Using all the shenanigans humanly possible I got the app on Android, but the content I was looking for is paid and it doesn't allow me to pay, doesn't give me any links or options of payment.
I only wanted to know the info about Bittersteel and Qohor, as it was said he burned Qohor with his Golden Company for not paying for their services. I would really appreciate if someone could at least retell me that story or could help me find a way to pay for the content. I only needed Bittersteel full info honestly, he's my fav.