The most common call from this side of the territory is a door that's gotten heavy to lift by hand, or an opener that strains and groans on the way up. On a builder-grade door installed when the house was new, that's usually a spring that's simply worn out its rated cycles - not a sign the door itself failed early.
Second most common: a double door that's started sagging at the center, visible as a slight bow across the bottom panel when it's down. On a 16-foot door that's a real structural issue, not cosmetic - the panel's carrying more of its own weight across that span, and once it starts, it doesn't correct itself.
Less often, but it happens on this newer stock: an opener that's outlived the door under it, or vice versa, where one part is original to a 2000s build and the other's already been swapped once. Mismatched vintage between opener and door is worth mentioning when you call, since it changes what we bring on the truck.