For whatever reason, my ESO files were installed in my AppData directory instead of Documents. This is the particular path:
C:\Users\<username>\AppData\Local\Elder Scrolls Online\live\AddOns
Trying to install my first addons here (just MapPins for now), tried manually and via Minion, but to no success.
Couldn't find anything about this particular issue, so I figured I'd ask y'all.