The servers are coming back online, and the patch notes for Hotfix 1.4.10.5 are available below.

FIXES

• Fixed a major portion of the issues causing the Static Compactor to fail to unearth objects during the Convergence and Sample Recovery Landsraad missions.
• Fixed an issue where some players on the Harmony World had a Sub-Fief Console on the closed Deep Desert server, causing the Sub-Fief to count toward their total land-claim limit. We also cleared all vehicles that remained on the closed DD servers across all worlds.

https://duneawakening.com/news/dune-awakening-1-4-10-0-patch-notes/#14105hf

Remember to restart your Steam client if the download does not appear!