Check your Location Services
Go to your device's Settings > Privacy > Location Services and make sure that the app in question is allowed to access your location.
If it's set to "Never," change it to "While Using the App" or "Always."
Reset Location Warnings
If you've previously denied location access for your browser app, your device may be blocking it automatically. Go to Settings > General > Reset > Reset Location Warnings to reset any previously denied location access.
Update your Browser App
If you're using an outdated version of the browser app, it may be incompatible with your device's operating system. Update the browser app to the latest version to see if this resolves the issue.