How can I change my email address in Polar Flow web service?You can change your e-mail address in Polar Account or in flow.polar.com. In flow.polar.com: Sign into the web service. Click your name on the upper right corner and select Settings. Click Change email. Type in your password and click Next. Enter your new email address twice in the appropriate fields. Click Save. You'll get a message informing about the change to both your old and new email address.