regards, The Firefox app on laptops and handsets runs very well. well synced too. the problems I experienced were: when my laptop was damaged and had to enter the service center, I didn't have time to reset the browser. there are many passwords there. logging out of the device in the account settings menu from my android handset likely only stops the browser on the laptop from syncing with the handset, but does not delete the passwords already stored on the laptop Firefox app. (i've tried it on my desktop PC). thanks in advance for the help.