Fire TV WebView Probe
This report came here inside the link you scanned, in the part after #. Browsers never send that part to a server, and this page makes no network requests of its own. The report leaves your phone only if you share it.
No report in this link
This page shows the report from a Fire TV WebView Probe run. Install the probe on a Fire TV (Fire OS or Vega OS), follow the prompts for about three minutes, then scan the QR code on its last screen with your phone.