Community moderators and contributors have released a statement:
Many people in the Artemis community have been patient and understanding of the lack of activity, ever since a prior period of radio silence was justified by Hariette saying that she was recovering from chronic pain.
However, this has gone on for long enough that the official Artemis Camp instance has failed over and never recovered. This is a problem for Artemis app users, since it is the only instance that is supported.
We are also unable to continue performing our duties as moderators in the Camp instance as a result. This effectively means that the entire project is dead.
Statement by Artemis Moderators
While hindsight is always 20/20, it does seem like this project was on unstable ground from the start:
Hope the project can be resurrected in the future.