Wish I could use app – Big Finish Audiobook Player Review

It's demanding I log in. I can't find a way to create an account since I just downloaded the app and few minutes ago. I can't find any way to just see descriptions or prices or anything. Just a note telling me that the app is sorry but I must log in this time... Even though I've never used it before.
Review by ldweller on Big Finish Audiobook Player.