The flavor text consists of 4 pluses, indicating that the string of letters below must be Caesar shifted by +4. This gives the clue SOURCE CODE CAN HELP. When looking at the source code of the HTML page, it shows that the grid is titled “Maze”. Along with the title this indicates that this is a section from Module Maze.
The Morse code at the bottom translates into a Tap Code sequence, giving the clue FIND THE ONE NOT REACHABLE, providing the solution.