Hello,
1. Did you use the latest version of Bandicam?
Please install the latest version of Bandicam and try again.
https://www.bandicam.com/downloads/
If you uncheck the 'Show mouse cursor' option, the mouse cursor will not be shown in the recorded video.
If you still see the mouse cursor, uncheck the 'Use enhanced capture method' option.
For more information, please refer to the following link.
https://www.bandicam.com/how-to/mouse-effects/