RE: my bot stopped working in telegram, help

I checked your bot and was able to message it in Telegram.
I did notice that some responses were triggering errors, checking your bot I noticed that you had set an invalid "command" in your default response.

A command is a JSON {} command that can be send back to the client with the bot's response. It must be a valid JSON string. You had entered invalid text in the command, so was trigger an error and no response.

It should be working now.