The screenshot shows one of the most useful features of the program, the "Show hotkey definition" window which is reached from the Actions Menu. This window shows you how HotkeyNet interprets what you wrote. Often the program's interpretation is different from what you intended.
Note that HotkeyNet added SendPC blocks using the local PC as the default.
How does HotkeyNet decide which blocks nest inside which other blocks? It follows two rules. First, blocks nest in the following order: