Since I had to do a forced computer restart 1 week ago I lost all my data synchronized. I tried to synchronize but it was simply empty.. the browser whas the same as when I first downloaded it ..

I uninstalled and installed the browser back to see if anything happened and it did not work. And now when I went to see here it says that the connection to the synchronization server is "temporarily unavailable", what is this??

I had a stack of relevant data and simply this was all lost !! )':

Please tell me what is happening and if that has a solution.