Luckily There Was A Note
Russell would leave a note inside the box. The text on the note was “Hi, you’re on camera. F-you thief. Hope you like cat crap”. Of course, the note was dedicated to the thieves and not the neighbor. It also made things a bit easier between the two.
Neighbor has read the note and realized what Russell had been doing the entire time. He understood the problem and he was the victim himself. He also wanted all of this to stop and to be able to get his packages developed and not stolen.