Hello! I'm sorry to hear that you're facing this issue with tab synchronization after reinstalling Firefox. I'd be happy to help you out. To open all your tabs from a different device on your current one, follow these steps: On your new device, make sure you're signed in with the same Firefox account you used on the older device. Then, go to the menu (the three lines in the upper right corner), click on "History," and select "Synced Tabs." Here, you should see a list of all your open tabs from the other device. To open them all at once, click "Open All in Tabs." That should get your tabs back on your current device. If you need any more assistance, feel free to ask!