Yes, you can. You can do that right after installing the add-on on a new browser, you will see the pairing screen. If you have already installed the Browser Extension on a new browser, go to the 2FAS browser extension settings (Right-click on the 2FAS browser extension icon and choose “Options”), go to the Settings tab and click “Add new device.” Scan the QR code with your mobile app the same way you did it the first time (go to menu, Settings, Browser Extension). The newly added device will show up on the list of connected services.