Please follow the power cycle procedure:

1. Delete the TC-KR device from the original connected phone. 

2. Unplug the 9V battery, wait for at least 10 seconds. 

3. Plug the 9V battery back into the TC-KR. 

4. Open the “K-Rain BL” app and connect to the correct controller. 

5. Look for the following screen.  (this is a MUST).

6. The rest of the procedure remains the same.