a. Billing. Nix may collect payments from User directly or Nix may use a third-party payment processor (“Payment Processor”) to bill the User through a payment account linked to their purchase or Account. A majority of purchases will be for physical products and payment will be required at checkout and prior to the shipping of any goods. The processing of payments by a Payment Processor will be subject to the terms, conditions and privacy policies of such Payment Processor in addition to this Agreement. Nix is not responsible for any errors by a Payment Processor. User agrees to make payment using their selected Payment Method. Nix reserves the right to correct any errors or mistakes that Nix or a Payment Processor may make even if Nix or a Payment Processor have already requested or received payment.

b. Payment Method. The terms of payment (and the items purchased - i.e. product, services, and/or software) will be based on User’s Payment Method and may be determined by agreements between User and the financial institution, credit card issuer or other provider of the chosen Payment Method. If Nix, directly or through a Payment Processor, does not receive payment, User agrees to pay all amounts due on your Billing Account upon demand.

c. Subscription and Recurring Billing. Some items in the Nix store may be offered as a subscription. When User purchases a subscription they will receive repeat deliveries. These are based on the subscription duration and frequency that the User selects. Payment details will be stored securely and User will be charged for each of these deliveries. Subscriptions may auto-renew at the end of their duration. If the User doesn't want to renew a subscription, User may cancel it. If User wants to cancel or change their subscription, they can do so at any time. User may also pause their subscription. User’s order confirmation emails have links to their order. User can manage their subscription from there.

e. Current Information Required. User must provide current, complete and accurate information for their billing account. User must promptly update all information to keep their billing account current, complete and accurate (such as a change in billing address, credit card number, or credit card expiration date), and must promptly notify Nix or Nix’s payment processor if User’s payment method is canceled, or if User becomes aware of a potential breach of security, such as the unauthorized disclosure or use of User name or password. Changes to such information can be made at subscription login at nixbiosensors.com. If User fails to provide any of the foregoing information, User agrees that Nix may continue charging User for any subscription fees under their billing account unless User has terminated their subscription as set forth above.

f. Reaffirmation of Authorization. User’s non-termination or continued use of their Subscription reaffirms that Nix is authorized to charge User’s Payment Method for that Subscription. Nix may submit those charges for payment and User will be responsible for such charges. This does not waive our right to seek payment directly from the User. User’s charges may be payable in advance or as otherwise described when initially selected to purchase the Subscription.