You can change your password via Settings > Change Password (On Desktop select Tools > Change password in the menu). Select this setting, then enter the current password to confirm your identity. Finally enter and confirm a new password.
Tip: If you do not remember your current password, but can enter SafeInCloud with the Biometric login, then you will be able to set a new password using biometrics instead of entering the current password.
Attention! After changing your password on one device you should manually set the same passwords on all SafeInCloud app instances installed on other devices and computers. Until then they will accept the old password and the cloud synchronization will not work properly.