Ahhh so I'm not alone. Sadly mine was broken right out of the box. While I can blame the 1st dry hit on myself having the pre-heat to high and long, all further failures attempting to vape I blame on Sigelei.
The last tank I tried was a Moonshot which has a build that I normally drive with 50J using a SX350J. With the TCR plugged in, resistance read and verified/locked I started with 200F, 10W and 0.01sec pre heat.
I found that somewhere between 15-20W if I simply held the fire button I could get a vape out of the Moonshot!

(I hope we can all agree that with ~95% VG juice, 200F should produce little if any vapor)
Outside of having the distinction of being the only mod I've ever bought that is a failure right out of the box, I like the size, weight and advertised feature set. I really wanted this thing to work.
I don't get a jumbled pre-heat screen every time I activate the menu but hopefully often enough to grab an image of it and send it to Sigelei.
EDIT Update just for grins I surfed over to Steam Engine and loaded up the TFR values for NiFe - the
TFR mode seems to work!
With a preheat of 25W @ 0.01sec and temperature setting of 200F I can hear the mod actually regulating the temperature. Move the set temperature up to a mild vaping setting of 390F and I was getting a vape as expected.
To conclude: it would appear that with my unit the fixed presets and TCR settings are broken but the mod might be salvaged by using the
TFR settings to control the vaping temperature in TC mode. (I have BOTH TCR1 and TFR1 set for NiFe48)