purchased from WLI (collectively the "Equipment") after installation of the Equipment in the customers' vehicles. The occurrence of any such loss or damage shall not permit Power2Ship to delay or reduce the payment of any fees prescribed under this agreement unless Power2Ship presents WLI with proof of a claim to an insurance company and, in such case, Power2Ship should replace the lost or damaged Equipment within a maximum of 60 days and resume the payment of monthly License Fees to WLI. Power2Ship is advised to obtain and maintain property and casualty insurance for the Equipment against all risks of loss or damage. The amount of such insurance shall not be less than the replacement cost of the Equipment. 6.4. Power2Ship is responsible for maintaining and storing in a safe and secure location backup copies of all data files Power2Ship may place in the System. In no event shall WLI be liable for loss or destruction of Power2Ship's data files for any reason. 7. PAYMENT 7.1. Power2Ship must pay WLI for the Products in full on the day it submits a PO (i.e., the PO is not valid unless accompanied by payment in full). 7.2. The payment of the optional antenna is 50% with the purchase order and 50% when the antennas are ready to be shipped to Power2Ship. 7.3. Monthly License Fees must be paid no later then the 7th of the month for all Units active during the previous month. For example, on the 7th of July Power2Ship will pay for Units that were active in June. 7.4. The purchase price for the Unit does not include repair beyond the first year limited warranty. The renewal of the limited warranty after the first year is at the option of the customer, but in any case, Unit failure does not