Inconsistent opening

I have a chamberlain garage door opener. The keypad does not always open or close the door, the remotes do not always work and I’ve tried what I assume to be a good deal of troubleshooting. I’ve changed the keypad it’s brand new. I’ve bought new remotes changed batteries changed the light bulb in the main hub so it wouldn’t interfere with anything. I’ve set and reset everything numberous times, each time absolutely correct. They work a few times then squat for no reason I can see. What am I missing ? I appreciate any info I can get