It is possible to change your password in the settings tab. Click the gearwheel (settings icon) in the upper left corner to navigate to the settings tab. Switch to Protection. You will need to enter your current password to see the settings of this tab. It is required to choose a Protection Mode to change the password. Click Change Password at the bottom of the Protection tab and continue with the Reset Password button. A temporary password will be sent to your registered email address afterwards.
If you do not remember your password you can initiate a password reset email sent to your registered email address through a fresh installed Hornetdrive client on any compatible device. The button Forgot Password will show up before logging in.