The below instructions are for the standard JECNN remote.

1. With the remote and board both turned on and paired, click the remote’s Mode button 8 times quickly in succession. This brings up the advanced parameters menu.
2. Scroll to item 9: MOTOR RUN DIR.
3. You’ll see CW and CCW. Whichever is selected, select the other one and click the Power button to accept.

The motors should now spin in the correct direction.