Had an issue today with multiple frequencies. I was flying Omni 5349 into Klax and the kept asking me to switch when I was already on the correct frequency. I didn’t transition from WiFi to data so the error isn’t on my end. I have now been reported and demoted to level 2 which is silly. Can something be done about this? 2003iggy was the ATC. Something is definitely wrong here. I also heard most pilots having the same issue. I worked hard to be and keep level 4.