I have a Samsung Galaxy S9 running e/os 1.16-r-20231018342509.
I cannot switch back on - in AP - ‘IP ADDRESS HIDDEN’, sliding the green button does work ie my IP is ‘Exposed’ … it has been like ithis for a number of weeks.
Now and then, I have the same problem. I switch the slide to 'on´ and see it seemingly working to establish the fake IP address, because I see the blue ‘working’ animation. But that animation doesn´t stop and the IP setting doesn´t change. Also on a Samsung, but this time a Galaxy A5.