I ran into a similar problem with my vape a while back, thinking my pod was faulty when it started giving me "fill pod" warnings even though it was still full. Turned out it was all about the wattage and airflow like others mentioned. Once I dropped the wattage and opened up the airflow a bit, the errors basically stopped, so now I always adjust those two when I change pods or flavors.
If I remember correctly for material files, on the left window you'll see all available (from all your mods) and the right window is what's on an individual mod. *You can't delete a material file from a mod if it'a assigned to a profile* So they'll work the same on all mods.
If you use multiple vendors or never changed yours, you might as well live with the evolv default. Otherwise it's under 'Mod' battery.