Dear julio1,
Would you like to uninstall NetDrive and reinstall it to the latest version?
https://www.netdrive.net/download/
If the problem persists, please attach log files to figure out what happened.
After setting the log level to VERBOSE, please reproduce the problem and send us the debug log file :
There is no login related credential information in the log files.
Sorry for the inconvenience it may caused.
Regards.