1. and 2. The device inputs have the correct syntax. Without knowing the rest of your .fds file (not the .psm file), can't tell you what is happening. A few possibilities:
a. Did you pick a valid location? HRRPUV and HRRPUL are gas phase quantities. If your XYZ puts the devices inside of a solid, then they will measure zero.
b. Do you have a fire in your simulation? Make sure you have a fire present in your input file and that is is producing heat release.
c. If you do have a fire, is it large enough that you have heat release in the area you are trying to measure?
3. This looks like a question you need to ask of Thunderhead Engineering via their support. You may have some mismatch of fds version and Pyrosim version.