Hey man sorry to hear. If you want to post in the bitcoin>mining>support, or in this thread, someone will be able to help you troubleshoot through everything.

The linked thread is a troubleshooting/setup guide by Haggsfin he was trained at the Canaan head office. Wherever you post give as much info as possible. Starting from how you are powering the Pi, right up to the colour you see on the 841 as well as the AUC. Info like your power supply and voltage of the circuit are good to have as well.

Good luck

Edit: Just don't want to gum up the pool thread; Mine On