I tried to lock/unlock my door but I see two red alternating lights on the sides of the Kevo lock

These lights indicates that the lock was jammed. This can be caused by a misalignment of the deadbolt and strike plate, or  this could indicate that the door was not closed all the way when the Kevo was trying to lock/unlock. If the problem persists, make sure that there is no obstruction between the deadbolt and the door frame and that the lock can fully extend into the door frame.