Hi fred, do you mean opt out? Also which setting do you want to turn off, could you add more details?

Yes, I meant the OPT Out setting. Evidently, there is a setting turned on to opt out of some web sites on the Mozilla browser. When I click on some websites video (nothing illegal or inappropriate) a pop up phrase something like "Opt Out is honored" comes up. I want to turn this off. Thanks for your help. r / fred

Yes, that's to confirm you signaled to opt-out of sharing/selling your data.

To change the setting: Global Privacy Control

See also:

• https://support.mozilla.org/questions/1578536