The clever developers intentionally made the registration process incredibly protracted. It's to their advantage because people are sure to buy a subscription after they've spent a lot of time on it. I think it's a kind of deception. What's more, they even refused to give me my money back. I am very indignant and upset. I think that an app with such an attitude towards customers has no place among other similar services in the Play Market. I hope it will be deleted.