Boot/trunk not opening :(

Hey guys!

I have a gen 2 (2006), while trying to open the boot the tailgate was pretty much crumbling in my hands, like many people before me, I used duct tape to hold it up:

Screen Shot 2025-01-18 At 8.16.14 PM by Prius2006GuitarGuy posted Jan 18, 2025 at 8:18 PM

Then I puchased that piece from Amazon, as well as part #1 (see below pic) from China, installed #1 on the tailgate and attached it to the car, I did not connect #2

Screen Shot 2025-01-18 At 8.14.59 PM by Prius2006GuitarGuy posted Jan 18, 2025 at 8:18 PM

but when I try to open the boot, nothing happens

I tried it with the old switch (#1) as well and it still won't open

Question 1: What could be the problem? Please advise

Question 2: The duct tape has left some white residue as can be seen in pic 1, best way to take that out?

Thanks!