I've had a lot of experience with short course pools, and some experience with long course pools, but I only have encountered an auto-backwash valve one . . . and it was an antique. Regardless, problems with such valves are going to be unique to that valve -- so your manual will be your best source.

However, you wrote:
Once I am offsite things end up going bad.
It's bad news I know, but I can tell you that that is TYPICAL of what happens at large commercial pools. More than once, I've padlocked controllers or valves to prevent eager, but ignorant, staff from screwing things up.

If I were in your situation, I'd force the valve in to manual mode (or auto, but only when I forced it!), and then backwash when I was on site! If you have someone whose likely to remain a pool service employee for at least 9 months longer, I consider training them, and then giving them a key. I wouldn't bother training staff who'll be on staff for less than 6 months. Teach them to vacuum, test, add water and . . . . to text you whenever there's a problem. Teach them to shock the pool, and maybe, force the filter in to auto-backwash, but ONLY under your direct instruction.