3rd brake light replacement ?

Hi everyone,I noticed that one LED in the third (high level) brake light on my Skoda Octavia IV Combi VRS IV (2022 model) is very dim. Because of this, I am planning to replace the entire unit in the near future.

From what I understand, on the MK4 model, the brake light is clipped in from the outside of the spoiler

Also there is some visible moisture in the unit is this an known problem ?

Before I start prying and potentially damaging the paint or breaking the spoiler anyone happens to have the official workshop manual page or a short video clip for this specific model ? that would be greatly appreciated!

Thanks in advance for your help!