I’ve looked into the Vabira controller too, and you're right, there's no official user guide readily available, and the site’s links are a bit dead. But here’s what I’ve found from the product page and testing:
The Red, White (Green), and Blue settings (84% / 99% / 40%) are percentages of power output, not actual μmol (PPFD or PAR values).
They don’t directly tell you the real-time PAR or umol/m²/s , those percentages are more like "intensity sliders" for each spectrum channel.
Your PAR reading at the bottom (if it's built-in or from a separate meter) is what gives the real light intensity.