There's a monthly/yearly paid version with some extra features for those who want to support the dev, and also a one time ad-free purchase option.
Mhm. You don't have to be particularly eloquent for it, but a basic description of what your character is trying to say goes a long way. "I persuade the guard to let us past" won't get you much, but "I appeal to the guards better nature, and use our shared occupation/love of X/ my most attractive smolder to ask the guard to let us past" will do great things in either the DC or getting advantage.
Back in the early days (early 2010s was when I first heard of it) when Bitcoin was worth pennies on the dollar that was exactly the kind of thing it was good for, and it was marketed as an international currency not beholden to governments. It is a shame that it got taken from that for the sake of "Bitcoin being valuable because you can profit off owning Bitcoin."
God, I forgot this was Anya Taylor Joy's first movie role