For the developer, the path forward requires a more sophisticated engine: moving from host-based blocking to and integrating DNS-over-HTTPS filtering. Without this evolution, 1DM will continue to lose ground to browser-based solutions.
If the issue persists only on one specific website, that site may be using "Ad-block detection" or server-side ad insertion that is difficult for mobile browsers to intercept. In these cases, reporting the URL to the 1DM developers via the "Feedback" section in the app is the best way to get a permanent fix in the next update. 1dm adblock not working