>>2931773
Step one, ditch the camera that takes pictures for ants.
Step two, yeah reframe the window. Seeing as it basically doesn't have a frame at all. Almost like someone just cut a hole in the wall with circular saw and threw up some 2x4 in the gaps.
Step three, look into what kind of waterproofing you have. Is there a layer between whatever is on the other side of those panels?