Hi,  @Martin_419 
Thank you for posting your query on our commercial forum.

To confirm, you are reporting that scratches and stains appeared on your camera lens after wiping it with a glasses cloth, is that correct?
Damage to the camera caused by human mishandling or improper placement during installation would typically not be covered under our product warranty. 

That said, if you would still like to pursue a replacement for your camera, you may reach out to your original retailer or our local support team. They will assess the specific condition of your device and determine whether a replacement can be arranged based on their evaluation.

  @Nathan-TP 

Only stains appeared, there are no scratches. If the cameras were properly sealed against the outdoor environment, dust wouldn't have settled inside them, the image quality wouldn't have degraded, and there would be no need to clean them. It's a chain reaction... I am not planning to make a warranty claim, it would end up exactly as you wrote. I previously owned XY cameras from you that worked without any issues... Let's consider this matter closed. I was just looking for some advice, but after many years, I am forced to switch to products from a different manufacturer where I won't have to face such issues. Have a nice day.