"Settlers 7 players have encountered difficulties playing the game over the [Easter] holiday weekend due to issues with servers that do matchmaking in multiplayer mode and that keep track of profiles, campaign progression and stats in both solo and multi modes," said Ubisoft to Eurogamer.

Though issues are not completely resolved, Ubisoft says it is making progress. A patch for the game, separate from the DRM issues, was released on Monday, which you can grab here.