Noqturn
13
I had a similar situation some time ago.
I cancelled a website all together with email I’ve been using - so I could not provide confirmation code to login to Twitch.
Twitch told me to FO as you need to have access to account’s email. I told them that I had phone number assigned there, but they still did not care.
OK so I unlinked that old Twitch account from Conan and created new one and linked it again - voila, all drops gathered via old Twitch account were there unlocked and ready.
This shit is bound to Conan, so even if you delete Twitch it should be still available in game.