Brave android version Chromium 71.0.3578.99
I am using Brave for a while now on android and this is the 2nd time when Brave suddenly stopped blocking ADs on all websites.
In the morning it was working fine and now it stopped blocking ADs.
I tried to troubleshoot the issue and found out if this happens I just have to kill the process and let Brave restart. After that it started to block ADs again.