PHILIPS UV Self-Cleaning Water Bottle 20oz

Hi! I received the package a few days ago. It charged well and everything looks good on the outside for me, except it has a sound in the lid like some little piece fall off. Since you aren't able to see it working I'm not sure if is function properly. It is normal? Or is something wrong with it? So far I'm going to review it with 2 stars and I will update it when I get an answer. Update: I talked to the customer service from Philips and they suggested me to change the bottle due its issue, so I applied for a product replacement with amazon, I sent them the malfunctioning bottle and they sent me a new one. This new bottle is also not working properly after a couple of months, it has fog inside the glass that I think it doesnt let the product treat the water properly and also when I open the bottle the UV light doesn't stop working, I tried letting the lid rest for a couple of days until it seems to be dry but this fog come again with a few hours of use. I attached to this some photos and videos so you can see the problems better. So far I haven't become an answer from Philips, they stopped answering my email 3 weeks ago.