How I understand a system works and what I'm being told by Solar company

[LightGEN]

I would ask the energy provider to install an import / export meter as soon as possible or one that is able to detect bi-directional current unless they can prove the one you have is suitable for bi-directional current and therefore not effecting your ROI.

In the case of the Landis and Gyr model, the meter display mode can be reconfigured via its IR port, I expect this isn't a unique approach.