A key ingredient btw might be nitrogen.
Could be because of an attempt to better control the energy generating process.
The Sapphire cell likely was not designed specifically to this energy generating process but more to perform a wide range of experiments investigating the Sun's process.
If my assumptions are correct a few key processes occur in one space and almost at the same time.
To controll all of this more or less independantly will be a big challenge.
If the aim of Aureon Energy is to specifically develop energy generators, the design will require a lot of alterations compared to the demonstrated reactors.