WhatsApp's official terms of service prohibit the use of unofficial "mods." Using them can lead to a permanent ban of your phone number. How to Safely Use Whats Web
Below is a technical overview and safety guide regarding modded Whats Web applications.
The search results for "Whats Web Modded Mixroot apk" suggest that while many "Whats Web" modded APKs exist for cloning accounts or adding features, "Mixroot" specifically does not appear to be a major or safe recognized distributor in recent reputable archives.
Open whatsapp.com in your secondary device's browser and select "Desktop Site."
If you must use a dedicated app, stick to well-known stores like the Google Play Store or reputable mirror sites like Uptodown or Aptoide .