Don't use it! It has been sold to Avast.
https://www.i-dont-care-about-cookies.eu/whats-new/acquisition/

It was a good add-on, unfortunately i can't use it anymore since it was sold to Avast, which can't be trusted...

Sold to avast, I highly recommend looking for a backup of the 3.4.2 version and install it from the .xpi file and disable auto updating!

Sold to Avast... "trustworthy IT company" LMAO

Sold to Avast!

Sold to avast. We need a fork!

Technically a good addon, but now it's part of Avast, so it's not really trustworthy anymore....

Avast bought it

sold to Avast!

acquired by avast, that's too bad !

Acquired by avast

This Add-on was acquired by AVAST. Kiko, the developer of this add-on, claimed that AVAST might be a "trustworthy IT company". WTF and what a pity. AVAST is known for selling browsing data from their users! (vice.com, searching for "avast"). I removed this add-on immediately. In general, I advise *against* installing add-ons from antivirus-companies. For reasons...

acquired by avast.

Sold to Avast. Stay away.

Required by Avast, wouldn't consider this safe anymore.

Acquired by Avast, high risk of privacy data leak

RIP. Was bought by Avast. Keep out.