I try the same but had to give up once. HarperCollins released a book series as a series of early Android apps. When the app launches for the first time, it dow

I try the same but had to give up once. HarperCollins released a book series as a series of early Android apps. When the app launches for the first time, it downloads the assets. I paid for them and came back to read them several years later but the server was down. Reviews mentioned this and the official reply was to contact them for a refund. I did but multiple times but they alternated between ignoring me and refusing. Eventually I gave up. I no longer buy anything from HarperCollins.