What you want to ask is, "What is the flashback of Moby Fitness app?" Due to incompatible devices, the system needs to be updated as follows:

1. Incompatible devices: Moby Fitness APP flashed back because of various incompatibilities of applications, which led to the program not being opened on the device, leading to flashing back.

2. The system needs to be updated: When the version of Moby Fitness APP or equipment system is too old, it will also cause the problem that the flash back cannot be opened, so it is necessary to update the version of the equipment and APP in time.