In that case what happens to relative NOWS?
They are still relative, because the fastest speed that information can be sent is still the speed of light.
The speed of light is the same in all reference frames regardless of their relative speeds. So using the speed of light to exchange information to synchronise clocks will result in those clocks being synchronised in the reference frame in which they are stationary, but in a relatively moving frame they will not be synchronised.
That is what my weird text diagram in post # 117 was supposed to show, but when you looked at it, you only saw that it appeared to have a pattern. There is more to it than the pattern, it shows the left clock being set to 0:000 before the right clock gets set to 0:000, but only in one frame, not the other..
Is it not a little more complicated than that?
How do we even know that particles are entangled?
What is it that Einstein called "spooky action at a distance"?
Yes, quantum entanglement is more complicated than my analogy about the envelopes, but my analogy is still good enough to show how the envelopes can not be used to send information faster than the speed of light.
The way the quantum researchers know the particles are entangled is by very careful analysis of the probabilities of different spin states. As you said, it is complicated. Unlike my envelope analogy where we can easily think of the contents of the envelopes as predetermined, they have determined that the spin states of the entangled particles are not in a predetermined state. One or the other must be measured in order for them to be in a particular state. That is why Einstein called it "spooky action at a distance".
But none of that matters, because as my envelope analogy shows, no information is being sent from one to the other faster than the speed of light. There still has to be a light-speed signal sent from one to the other to inform them that the state of the other one has been determined.