Just a heads up that there has been issues with EO and the Model 3. My charger didn't work with the car, nor did the brand new replacement, so ended up with the Tesla unit.
I believe EO have now stated they've fixed the issue, but might be worth clarifying that before handing over any money.
Have you got much further info on this EO issue? I've got an EO mini at workplace and home and not been having much joy charging SR+ since they were both installed 6 weeks ago. One at home has never put a charge in model 3 (but does a model S) and the one at work seems to work 30-40% of the time with no real reason or rhyme as to why it sometimes does or doesn't. I spoke with installer and them EO a good 6 weeks back but think I had one of the first Model 3's and the presumption was there were no compatibility problems but now there are more Model 3's out there maybe there is an EO / Model 3 problem.
My installer is going back to EO now but whilst I'm waiting to hear I was googling around and found your post.