Sorry to hear that. Hope you didn't buy it from the provider? Because they could easily determine connectivity issues with faulty equipment remotely, not suggest.

If you encounter issues with your web browser, you can do the following:
1) Start Firefox in Safe mode. To do this, hold down the Shift key and click the Firefox icon. Once the window "Open Firefox in Troubleshoot mode?" appears, release the Shift button. This will start the web browser in safe mode, with all extensions disabled. In this mode, you can remove or disable extensions that cause issues.

2) If you use Windows operating system, you already have yet another web browser installed, either IE 11 or Edge. You can temporarily use it to google for troubleshooting or to connect with our support.

We're going to release version 4.13 soon, and if the issue is gone, we shall provide detailed information on it in the release notes.