The discrepancy in the date is likely due to the recorder's built-in clock, which is powered by an internal battery. When the device runs out of power, the clock stops running. If the recorder isn't connected to the app after being recharged, the timestamp for new recordings will default to the last time the device stopped working.
To resolve this issue, please connect your recorder to the app. This will synchronize the clock with your phone's time, ensuring that future recordings have the correct timestamp.