Hello again,
So far there have been three posts regarding trophies not unlocking for some people doing certain tasks such as the Bridge Wardens Crest Ring and meeting the Flutist without starting a new character.
I believe that those on Playstation who happen to join other sessions with other players on Xbox or PC who happen to have already acquired the trophy or achievement and/or the items prevents the first user from trophy acquisition. However, upon creating a new character without the item or achievement/trophy, whether going solo or with another person with a brand new character who doesn't have the trophy or achievement(I removed the achievement on Steam and tested this before), this issue doesn't happen.
I'm currently waiting on a third response in this category, and if my suggestion resolves the person trying to get 3 trophies, I think it's best if this is looked into in the future.
Thank you.