Hey @leyley123!
@Dan_Huel discussed this a bit on a previous forum thread and I thought I would link that thread here.
I wanted to also mention that we had Huel Hot and Savory tested as it is prepared with boiling water. @Tim_Huel discusses this in detail on the UK forum too, linked here. The micronutrients were not affected as much as we previously expected and heating your Huel v3.0 below boiling to warm it up should not be a concern! 
Also, that sounds delicious and like the perfect food right now, especially with snow falling at the moment in New York!