As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FLIGHT 4208 THE FLIGHT ATTENDANT REPORTED THE MAIN CABIN DOOR WAS EXTREMELY HARD TO OPEN. THE AIRCRAFT WAS REMOVED FROM SERVICE. SERVICED PASSENGER DOOR FRAME ROLLERS AS PER EMB AMM 53-21-02. THE PASSENGER DOOR OPENS WITH EASE. THE OPERATIONAL CHECK WAS GOOD. THE AIRCRAFT WAS RETURNED TO SERVICE.