Did you change out the coupling/adapters for ones that will convert the usage from natural gas to propane? Check out any number of videos on youtube: Converting A Natural Gas Stove To Propane
You have to get the oxygen mix to be what it needs to be by manipulating a few things on a factory direct natural gas stove.
I watched several vids and followed the instructions in the manual.
When it works, the burner the flame has good color and it heats up quickly. Because it wasn’t generating a code previously, it was a little difficult to troubleshoot until I found the service manual online. Essentially, the gas valve has a “safety” feature where it detects the amperage draw of the ignitor. So the ignitor can glow red hot, but if it isn’t within range, or drifts in and out, the safety valve will shut the gas off. That and the control boards are notoriously craptastic. Once I found the specs and got myself an amp clamp, I was able to identify that the ignitor was the root cause.
But now the new control board is throwing an error indicating it’s either the touchpad or the board itself. I’m pretty certain the old board was working, and I can probably put it back in, but it seems like a fool’s errand to keep chasing these problems.