OK take a break and breath.

I use Tekins in both 1/12 and WGT with receiver packs.

It sounds like you are not getting the ESC connected to the 1S. You need to check those wires.

I leave the red wire in the plug since it doesn't have any bad effect on the BEC. The ESC will light up when you plug in the receiver pack and the LEDs will ramp up and down but the motor won't work unless the main battery is connected.

Now the ESC switch can be on or off, it doesn't matter except if you want the ESC to sense the Main Battery's voltage and use the cut-off and then you need to leave the ESC switch on.

I've using this set up for two years without any issues. My guess is that the main battery isn't connected to the ESC.