https://www.esoui.com/forums/showthread.php?t=8858
Try the Screenshot trick to test which folder eso uses for your addons.
Maybe it's not searching then in c:/users/... /documents/elder scrolls online/live/AddOns anymore but in another folder.
Sometimes a windows patch/update breaks that and addons all of sudden are searched in for example c:/users/... /AppData/elder scrolls online