C:\Users\gameb\Documents\Elder Scrolls Online\live\AddOns
This is where they are installed and I use Minion 3. They don't show ins ESO looking for any help.
In addition:
Try to search for the filename UserSettings.txt or AddonSettings.txt on your harddrives. In the director's subfoilder "AddOns" your addons should be placed in order to work.
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