try using remove illegal in the config:

remove-illegal:
# Helps reverse players who have enchantments on illegal items.
# When holding an item, any enchantments present on the item that shouldn't be will be removed.
# Players with ecoenchants.allowillegal permission will be ignored.
# This may impact performance.
enabled: false
# If the item should be deleted rather than have the enchantment removed.
delete-item: false

from ecoenchants.

try using remove illegal in the config:

remove-illegal:

Helps reverse players who have enchantments on illegal items.

When holding an item, any enchantments present on the item that shouldn't be will be removed.

Players with ecoenchants.allowillegal permission will be ignored.

This may impact performance.

enabled: false

If the item should be deleted rather than have the enchantment removed.

delete-item: false

That does not fix the issue of being able to completely bypass the enchant conflicts by simply using a villager to enchant the item.

from ecoenchants.