URL: https://app.webadb.com/

Browser / Version: Firefox 85.0
Operating System: Ubuntu
Tested Another Browser: Yes Chrome

Problem type: Site is not usable
Description: Browser unsupported
Steps to Reproduce:
Error

Your browser does not support WebUSB standard, which is required for this site to work.

Latest version of Google Chrome (for Windows, macOS, Linux and Android), Microsoft Edge (for Windows and macOS), or other Chromium-based browsers should work.

View the screenshot

From webcompat.com with ❤️