How can I contact customer support? You can contact Lingo Customer Support via email at lingosupport-us@hellolingo.com, call us on +1 888 764 7684, open a chat or submit feedback within your Lingo app. We are open 9am - 9pm Eastern Time, 7 days a week. Related articles Can I request a refund? Do I need any extra products to help my sensor stay on? I see the following message when using the Lingo app: Biosensor Ended I see the following message when using the Lingo app: Replace Biosensor Is there anything I can do to help the biosensor stay on better?