Thank you again for bringing this to our attention. We are very sorry to hear that the pens you received are not performing as expected. It is frustrating when a product does not meet your needs, and we truly apologize for the inconvenience this has caused. To help us address the issue, please let us know how many pens were affected. If possible, we would also appreciate a short video showing how the pens are working. This will help us better understand the problem and find the best way to resolve it.