Nothing to do with windows, but important for Android phone users

Couldn't get the greeneking or Screwfix apps to work, in my android phone
To cut a long story short, it turns out that some apps use the default browser first when launching the apps, then close it and return to the app, no idea why this is so, but as my default browser was EDGE it wouldn't let me use these apps. I changed the default to Mi Browser, but Chrome works as well, and all was ok.
Only mentioning this, because it took me months to find this out, so thought would pass on here.