Hi Steve, thanks for joining this thread.

Currently, there's no way to change the default setting to off(removing the app is the only way but yes it takes the option off completely) and this would need to be manually unchecked on the invoice each time before sending - we agree this would be a handy option to have and we'd be grateful if you could submit a feedback request by going to the Cog > Feedback within your account, this way your comments will be submitted directly to our developers who're able to review and implement such changes. :)