Hi - Thank you for your feedback and I'm sorry to hear that you are having some connection troubles. We are more than happy to replace any product that may be deemed faulty. I note from our communication system that you received our connection tips, but then did not respond as to whether these were successful for you. If you are still having problems, please do respond to the e-mail and one of the team will be happy to assist you and provide additional guidance. If we deem your Sensor to be faulty, we will of course provide a replacement free of charge. Many Thanks, Caroline - Customer Relations Manager - The OvuSense Team