After this update, I also got this feature. The maximum bet is 4 times. It is worth noting that when participating in team activities, even if you only play one level, the points will become 4 times.
Part 1 The type of music I like changes with my mood. Most of the time, I like to listen to some light pop music, such as the theme songs of Japanese anime. Part 2
I have the same situation, and when I followed the "Standard Operating Procedures for Troubleshooting Abnormalities" in the "Support" post, it didn't work. Maybe the next update will fix it.