Hi If you have a copy of your Firefox profile for desktop Firefox, you may be able to recover your bookmarks and other data. Please have a read of this [[Recover lost or missing Bookmarks| article]]. If you have a copy of your data on a mobile version of Firefox, please follow these [[How do I set up Sync on my computer?#w_connect-additional-devices-to-sync | instructions]] to connect it to Firefox Sync to copy your data.