I can’t use the Cluesheet Companion app with the game – it always says “Invalid Code”.
We are aware that some players are having problems with the local multiplayer feature, and we apologise to those who are affected. This is a particularly difficult issue for us to trace because it involves a third party multiplayer matchmaking code, but rest assured that we are investigating the problem and hope to have a solution soon.
In the meantime, some players have found that the problem can be temporarily worked around by deleting and reinstalling both the Switch/Steam game and the Cluesheet Companion on the mobile device. We apologise for the inconvenience.