The CR10 is pretty similar to the Ender 3, perhaps take a look at this series of guides that goes through a lot of setup and configuration steps.
https://duet3d.dozuki.com/Guide/Ender+3+Pro+and+Duet+Maestro+Guide+Part+1:+Wiring/37?lang=en
What exactly is wrong with the BLTouch, hotend, and fans?
Take a look here for what information to provide: https://forum.duet3d.com/topic/5909/guide-for-posting-requests-for-help