The "Purge all caches" button was causing people to download multi MBs of filter lists with no guarantee that the fix was present in any these lists. There is no need for that crude way of updating filter lists:

- Differential updates ensure you have most recent filters multiple times per day instead of once every 6 days

- In case a fix is added to a list and is immediately needed by a user, we provide a click-to-update link in support channels to guarantee you receive the fix with minimal bandwidth burden

Keep in mind uBO is not monetized and we can't afford to end up having to pay tens of thousands of US dollars to a CDN providers to host the lists -- this would be the end of the project.

Update 2024-01-18:

The updated anti-blocker has no effect on uBO, no fix needs to be added to the lists, so something else in your browser is causing this, and re-downloading all the lists would have accomplished nothing except pointlessly consumes bandwidth of the server.

You need to follow the instructions to the letter: https://github.com/uBlockOrigin/uAssets/issues/20586