Why not remote view into system monitor and fire off those commands and see if the relay states are changing properly (if you haven't done that already)? At least that way you can see if the relays are working properly every time and that would determine if the commands are working or not and that would point to wiring up to the garage door which could be failing ie voltage drop/damage/connection.

For garage doors, I typically use momentary close. The profile already has a 1 sec delay. I just went to check my component library to verify the delay and I cannot find it for the life of me. I haven't had to modify a profile since updating to 5.2.2 and downloading SAM so it might be in a different folder.