The forums will tell you to try vinegar. Then ammonia. Then mineral spirits. Then a combination of all three.
Here's what they won't tell you: every harsh chemical you use to strip the Rejuvenate is also stripping oil out of the original finish underneath.
Your floors were dull in the first place because oil had been slowly evaporating out of the finish over the years. That's normal. It just happens with time.
When you scrub with ammonia trying to remove the plastic film, you're accelerating that oil loss in the sections you're treating.
The underlying problem gets worse while you're trying to fix the surface problem.
If you've spent three days scrubbing with ammonia, your floor now has two problems instead of one. The Rejuvenate is still there. And the finish underneath is more oil-depleted than it was before you started.
After a week of chemical stripping, you can end up with almost no oil left in the finish at all.
Which is why the floor looks worse than when you started.
Stop scrubbing. Feed the finish instead.