Hi

This does not sound like an issue with Firefox for Android, but I recomend that you contact your internet service provider who should be able to help you with this issue.

The adress I'm using are provided by Internet provider. And if I use it on laptop and Firefox I'm connected to the router.

The adress I'm using are provided by Internet provider. And if I use it on laptop and Firefox I'm connected to the router.

Hi

Is your Android device conntected to the WiFi router?

Yes it's.

And also The connection was reset

The connection to the server was reset while the page was loading.

   The site could be temporarily unavailable or too busy. Try again in a few moments.
   If you are unable to load any pages, check your mobile device's data or Wi-Fi connection.  And also insecur conection

Yes it has.