Call 650-912-1817 to describe the problem and confirm current availability.
First checks
Confirm the opener has power and try the wall control. Look for an obvious obstruction. If the opener runs but the door barely rises, stop cycling it and look for signs of a spring or door-balance problem.
If the door feels extremely heavy
A garage door that suddenly feels much heavier than usual may have lost spring assistance. Do not force it open or rely on the opener to lift a door the counterbalance system is no longer supporting.
When to call
Call when the door is trapped closed, moves crookedly, has a broken spring or cable, or the opener continues to struggle after basic safe checks.