I had this problem after updating my phone from and iphone 12pro to an iphone 14pro. Everytime I tried to export a video it would change to a super exposed kind of green lighting even though it didn't show it while editing only when exporting the final video.
In my case I was recording videos in HD but when I switched to record in 4K instead the problem with the lighting after editing and exporting was fixed! ( I use the free version and in the exporting step I choose to export in HD instead of 4k)
I hope it helps! it drove me absolutely nuts for months as I absolutely love the app and I couldn't find a solution anywhere!