Ensha at the round table hold doesn´t invade me and I wonder why

[Humpenstilzchen]

Usually he would attack me pretty early on when I have defeated godrick and rennala though this time he doesn´t and I have already killed godrick, rennala and radahn as well as astel and royal knight loretta.

Did I miss something? Is there a certain trigger for him to invade you which I´m not aware of?

[fauxpas]

You have to get the Hagitree amulet.

[vamirez]

Fextralife: After obtaining either half of the Haligtree Secret Medallion, Ensha becomes an NPC Invader and ambushes the player the next time that they teleport to the Roundtable Hold

[Humpenstilzchen]

Oh ok thanks guys

[Krazy Wallet]

He fell asleep standing up and slept through his alarm

[༺𝕯𝖊ⱥ𝖙𝖍༻]

Can you tell me if there's a part of the medal, but it won 't hurt?
What could be the reason for this