Everytime I try to opt-out, I get this error message:
This is what I get in the console:
And it responds with the following:
I tried, again and again and again.
This happens accross the whole StackOverflow (StackExchange?) network.
Edit: It works! For now?
Seems to have been fixed by what was done in: Winter Bash 2018 icon disappeared
On the following comment: