We had low water pressure in our showers.
Plumber came the first time, replaced the water pressure regulator. This did not fix the issue.
Plumber came the second time. Turns out we had 2 water pressure regulators. He removed the second one. I don't know why. The pressure in the showers seems to be "okay" now. But now there is a new problem, which is that our kitchen sink now has low water pressure (like half of what it was before he came).
What is going on and what can I do?