Penalties should be a slam dunk, the videos clearly show them passing double waved and/or single waved yellows. As already said that means slow down, irrespective of what your dashboard or the light panel says. Electronics can fail, the flags can't and always take precedence.
Oh and some people seem to be mistaken thinking that the yellow flags can be thrown in error. That's not how it works. Race control don't decide when to throw yellows, it's the other way around. The marshals throw the manual yellow and at the same time press a button to send the signal for the electronic ones to follow. It would be absurd to do it the other way around, marshals can always spot potential hazards before the cameras can.
So no, it's not possible that they were an error because it's the judgement of the marshal who throws them based on their training. It seems in this case there may have been a fault with the signal to the digital boards, but again, not relevant.
In fact VER does also have a yellow light come on at the same point. 100% slam dunker.
I assume they're delaying them until tomorrow before the race for that drama they so crave these days, like the end of a Batman episode. "Will they get a penalty? Tune in tomorrow, same time, same channel!"