Based on the given information, here are ten potential issues a new user of the "生物节律工具" (Biorhythm Tool) app may encounter and their corresponding solutions:
1. Language Barrier: The app is available in multiple languages, but the user may not understand the default language (e.g., English). Solution: Change the language settings in the app to a preferred language (e.g., Chinese).
2. Login Issues: The user may face difficulties logging in via OK.ru, the social login option. Solution: Ensure that the correct credentials are entered. If the issue persists, try resetting the password or contacting the app's support team.
3. Understanding Biorhythm Calculation: The user may not be familiar with the concept of biorhythm calculation and its significance. Solution: Provide an introductory guide or tutorial within the app that explains the basics of biorhythm calculation and its applications.
4. Limited Compatibility Checking: The user may want to check compatibility with more than two pe