If you’re using Google Chrome, you need to disable Data Saver and asynchronous DNS . Google uses those two technologies by default and they interfere with Blokada’s host blocking mechanism.
To disable Data Saver, tap the three vertical dots in Google Chrome, go to Settings, search for “data saver” or “lite mode” and disable it.
2.1. To disable Async DNS, open the page “chrome://flags” in your browser, search for DNS and disable the Asynchronous DNS feature.
2.2. On newer versions it can be necessary to disable “Secure DNS” in Chrome’s privacy settings. Make sure to set it to “Use current DNS provider”.
On your device, go to Settings -> Applications -> Chrome -> Storage and clear cache.
Google made sure that both of these two things mentioned can’t be disabled. I think what we hear/read on Chrome being the best browser could be a complete sham.