You mentioned that your opener is an older model. It is very unlikely that that the reason the commands don’t work is the same as in case of previous posters here. If you have to hold the button all the way while the door closes, the probable reason is that your opener doesn’t have a photo-eye safety feature installed/working. What is the model of your opener?
Thanks for your response. I mis-spoke in saying that you have to hold down the button to open or close the garage. I do have the photo eye safety feature (that detects if something in in the way).
The model number is 139.53970SRT.
Hope that is the information you needed.
From the manual it looks like for your opener, Garadget should be connected to terminals #1 & #2. If you already have connected to those terminals then please confirm the wiring by temporarily connecting the two screws in the back of Garadget with a piece of conductor and it should have the same effect as pressing a wall button.