Diễn đàn hỗ trợ Firefox

Hi! I have use of Firefox but about a week ago something strange happened when I opened my Macbook Pro computer to start the day...the Firefox reverted to another version (maybe older) and all my bookmarks and the way I obtain a new window while searching is completely different and I have no idea what happened or why it did this?

Well,I found firefox browser in disk c: so I just uninstall and install it again in another disk.I do see firefox account was that very firefox account,but.........when install finished and login firefox account,It shocked,firefox is building a new account witch I used over 1 year,yes,witch account I saying these.OMG what happen?I can't find my bookmarks and colleted pages...OMG what happen somebody help me!!!

当我发现火狐浏览器被安装在C盘，我就卸载重装到另一个盘了，当时我确实看到了火狐浏览器登录中的账号是这个号，但是。。重装完成后登录火狐浏览器账号时，我傻眼了，它正在为这个邮箱新建账号，就这个我用了一两年的号，这是怎么回事？我的书签和收藏全都飞了，这是怎么了谁能帮帮我！！！

I lost a bookmark folder in my main computer. I did a sync and it did not appear. I opened an other older computer and it was still there. I did a sync and expected it to then show up in my main computer, it did not. I went back to the old one, there it had now disappeared. The help files say go to bookmarks, then to manage bookmarks, except I don't have "manage bookmarks", just a list of some recent bookmarks. When I do a " bookmark search" for something which was in the folder, it finds it, so the folder is still somewhere. How do I get it back? Why did sync fail and did not add it from the old computer?

Thanks for any help