I have the same issue, water in my lens and DJI are such useless douche bags. Ive spent $20k with them in 3 months and they wont give me that part they say is $101 on their site. If you figure out how to open or remove the lens please let me know. I cannot get water droplet moisture out. Tried EVERYTHING, plus I feel dji should give me a new one free but they wont even let me pay for it. My plan now is to find a way to remove lens then cover with a UV filter or ND fileter (ie completely remove the glass) you never know, it might prevent lens flares and actually work better!
If anyone knows where to buy these lenses of how to open or remove the camera lens please let us know!