I am having the same issue. I Just turned it on for first time this morning. It says it is "too hot" but that is not the case.
I don't know if this is the answer but this is how I fixed it-
1) Remove the atomizer
2) Take out the batteries and then put them back in.
(This allowed me to enter the menu screen. Before it would not allow me to do so.)
3) Switch to a different configuration #.
4) Put the atomizer back on and reset the resistance.
This worked and it is now working fine. I vaped for a minute and then I tried a couple diffeerent atomizers tanks. All of them worked fine.
To see if it the preset configuration was the problem, I put it back into the configuration that had the issue, which was #4, the same problem came again and it said it was to hot and that I needed to wait. Did the above steps again and now it is back to normal.
Idk if this is a permanant fix but I am now just not going to not use configure #4.