Citing “serious internal debate,” Tree of Savior developer IMC Games revealed that they have requested that Valve temporarily shut off the ability to access the game. The decision comes in response to server stability, lag, and major issues regarding gold farming and in-game chat spam.

These restrictions will be put in place as soon as they are implemented by Valve and will be lifted as soon as the issues have been resolved. There will be another announcement as soon as the restrictions are implemented.

Tree of Savior previously had issues with fraud regarding Steam refunds, where certain malicious people were purchasing founder packs and then refunding them via the Steam store to keep the items.

(Source: Tree of Savior)