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[marcopm]

I am making the assumption that all files are uploaded and the plugin manager is checking for that issue.

It does not, you must manually double-check that all the files have been uploaded correctly

Not using bootstrap. It’s my own template. There are a lot of options but not one to enable the mod itself. But then again my brain got fried earlier today so hoping I just overlooked a minor detail.

If you're using your own template, check out the "Autocomplete dropdown list doesn't appear" FAQ in the readme file. In short, you may need to specify your own custom CSS selector in settings.
Also, as carlwhat said, check if there are any JS errors in the developer console.