You can change your Nozbe account password in the “Settings” section. Tap on the cog icon to open it, and then choose the “Change password” option.
Type your current password in the 1st field and then write the new one twice in the following fields. Use “Save” to confirm.
You can also change your email address in the “Settings” section. To do so, tap on the “Change email address” option. Type your new address twice and then your Nozbe password. Don’t forget to save the change.