Very weird. I was thinking it was an issue with your garage sensor until you mentioned that you have an issue with another gate as well. Perhaps you need to take it in for service and do a check.

I don't have a problem whatsoever with my e70. I can open the garage door while turning into my driveway (100 ft away) so I know it is capable of handling some distance.

Have you tried bringing your garage remote and comparing how far it will go compared to the e70?