Yettr6 User Guide Fix [updated] -

Example: Original +0.23 → New +0.08 . Enter using numeric pad.

According to technical documentation available at the Yettr6 User Guide Fix [better] , ensuring your firmware is up to date is the first step in resolving usability issues.

Turn your phone's Bluetooth off for 30 seconds, then back on.

After applying your fix, optimize the Yettr6 to prevent future failures.