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I have used an add on which has broken my experience of firefox.

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I installed I don't care about cookies it did not fix removing cookie prompts from websites it just broke the sites so I uninstalled the add on but I am still unable to load certain sites for example Eurogamer the prompt comes up dissapears and then I cannot scroll or interact with the site. I am now also having issues transacting on certain sites as well leading to a white screen I just want to role back to my previous settings so I can continue to use Firefox.

I installed I don't care about cookies it did not fix removing cookie prompts from websites it just broke the sites so I uninstalled the add on but I am still unable to load certain sites for example Eurogamer the prompt comes up dissapears and then I cannot scroll or interact with the site. I am now also having issues transacting on certain sites as well leading to a white screen I just want to role back to my previous settings so I can continue to use Firefox.

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As the first step, could you check your Enhanced Tracking Protection level? That is on the Settings page, Privacy & Security panel. If your ETP level is set to Custom, you can switch it to Standard or Strict. Or you can keep Custom, and change the cookie blocking level to "Cross-site tracking cookies, and isolate other cross-site cookies"

Next, on any problem site, clear the existing cookies. To do this, click the lock icon at the left end of the address bar. After a moment, a "Clear Cookies and Site Data" button should appear at the bottom. Go ahead and click that. Firefox will ask you to confirm; go ahead and confirm.

Then try reloading the page. Does that restore its normal behavior?

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