The developers say on facebook:
Dear Player,
It is with sadness we must announce that Wild West Town will no longer be available to play. We apologize for not giving you notice on the shutdown, but it was not planned. On September 25, 2016 there was a crash of a critical hard drive and critical data required for the game was permanently lost.
Our goal was to keep the game going as long as you, the player wanted to play.
We loved Wild West Town, we loved building it and bringing it to you and we are deeply saddened with this occurrence. We are thinking about remaking the game from the ground up and bring it back, this time on tablets and phones, if that is something that might interest you, please let us know.
Thank you for loving Wild West Town as much as we did,
The team at Clipwire