I'm having the same issue. Posted about it four times now and no response. Have all my Forsaken weapons, armor and quests completed but now I get a pop up any time I try to access Forsaken stuff telling me I have to buy it again. Shows I bought the Forsaken legendary edition on linked battle.net but nothing on steam. If I go back to transfer like I see them suggest to other people I just get a "error transferring entitlements"