In general, applications will flash back. Basically, these problems are either that after the upgrade of your mobile phone system, the downloaded app system has not been updated for a long time, which leads to the compatibility problem between the app system and your mobile phone system, or because there are too many background applications and insufficient memory in your mobile phone. Another possibility is that your app was not downloaded from official website channel, but from a third-party channel, and it was not genuine, so it was flashed back. I suggest you take a look at this bud you downloaded and listen to whether the app flashback is the reason.