This is caused by the particular watch face "Digits". In order to fix this issue, please follow the below steps.
- Download and install the same watch face "Digits" from the COROS app again so that the correct watch face can overwrite the incorrect one.
- If the first step doesn't work, replace the "Digits" watch face with any other face.
- Close the COROS app completely.
- Open the COROS app and install the "Digits".