As of today, April 11, the Foundry has been sunset on Neverwinter and Star Trek Online. You can read the original announcement post here: https://www.arcgames.com/en/games/star-trek-online/news/detail/11102923-foundry-sunset-april-11,-2019
All the content related to the Foundry has been removed from the games.
The rewards mentioned in the original post will be given out manually over the next few days. Please contact customer support if you have any questions.