Got it! If there is no leak that you can see and that the fluid level is right, try this first to see if it helps:
Scroll through the comment section and you will find written instructions that help you follow along. Also, in the video there is one step where what was said did not match what was done. This is easier than dealing with the hardware (fluid).
Whether this helps or not, it is good practice to refresh the fluid with blue FZ: OEM, Ravenol, or Aisin. Aisin is the cheapest among the three and readily available from RockAuto.