Plugins will not show on Tools>Plug-Ins.

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Momo's Minion
Hi, I'm new to UTAU and I would like to know why my plugins will not show up. This has happened with my Pitch Editor, Romaji to Hiragana, etc. For example, I extracted my pitch editor and placed it into the UTAU plugins folder. Same with all the rest. And when I went into plugins on my UTAU, they would not show up. I've tried watching every tutorial on Youtube I can but none of them seems to solve my problem.