They still work if you had them equipped, you just can't equip new ones or fortify them. The fortify menu is disabled due to a glitch.
https://forums.daybreakgames.com/dcuo/index.php?threads/episode-42-known-issues.319750/#post-4465795 The developers, of course, did a lot of hack with this DLC (a bunch of breaking games errors ...), but the players who came to the forum with complaints and do not see the answer on the first page of the forum are no better ...
