“a pot”? Where did you turn down hms, is this a file configuration
don't worry too much about the details, but I used a variable resistor (aka potentiometer, shorted to pot) to mimic your sensor on order to see if the the firmware would map the resistance to a temperature according to the google sheet you linked to - and it did.
copying your config Code will work?
it should be the same config i copied from your other thread, I just tried to verify that it was correct to rule out some factors.
please try heating it up again and take a look at the LED for the E0 heater down in the corner of the board and see how it behaves when leading up to the temperature plateau; also as Phaedrux points out, keep an eye on the Vin reading in DuetWebControl as the printer goes from idle, to heating and to settling on the plateau.and see if it changes much.