We’re sorry to hear that some of your lights aren’t working as expected. We want to ensure you have the best experience with our product. Since you’ve had them for two months, it’s possible that factors like limited sunlight exposure (especially during winter months) may have affected their charging.We recommend placing them in direct sunlight for a couple of days to see if their performance improves. If the issue persists, please reach out to our customer service team at customerservice@creative-prc.us, and we’d be happy to assist further.