I am also having this issue I just started playing about to get a class rating in scout class but now my stars show 0 no kills no time spent in vehicles or using weapons like I never even played the game have tried a couple of operations since still nothing the only thing that has saved is info for weapons and gadgets e.g. Unlocked weapons etc…
what the heck all my stats are gone and level is 0 - i was at 34 or 36 with lots of hours played and guns purchased. Couple of days ago it was fine. WTF???
Im level 54 and i have a 2.13 KD with every class maxed out but support and its all gone. What happenned and how the frick do i fix it.
Just checked mine today, all my stats have reset. Companion app says the same thing too. Yesterday my stats were fine. Unsure what has happened, the only thing I done differently yesterday was attempting to play a match with standard issue rifles only (only the servers were empty so me and a friend messed around there for a bit). Also said friends stats have also reset, but at some point he said they’ve returned to normal.
Same thing happen to me this morning. Logged on all stats are gone, played a game, got level 2, still says level 0. Come on guys
This happens quite a lot. It will fix itself. It’s something to do with the stats server being down and nothing to panic about.
You can still get the weapons you unlock you just have to select them. I’m level 10 medic and I was able to choose the level 10 gun.
Still a joke
This is bullcrap, you pay for this and it works 1/10 times i have time to play -.-"
I can start the game, but i am unable to join a server. All my stats have been reset, even the companion app says so… ffs, I was 68
Game started correctly and join in a match, everyone is rank 0, there’s no result summary, no battlepacks drop and no medal counts. This is what I met. MY BLOODY 30k 2d LANDSHIP BATTLE! 
Not sure what’s going on with servers or dice my bf1 stats went to 0 so I played bf4 then same happened, a little later they were back to normal but I couldn’t play bf1 multiplayer my server browser only shows 2 servers in Europe active
Yeah, today my account went from lvl 19 to 0. I have my guns and my dog tags, but nothing else…
Stats zeroed. “Happy New Year, a fresh start” - DICE
I used to be level 16 or 17 but I still have all my classes, but my level is now 0 and so is my win% score/min and kills/min. WTF?
It’s called server issues. It will all come back. Chill.
Went onto BF1 today and I somehow managed to go from level 65 to level 0 
Also all my classes rank went back to zero but i was still able to see the Martini-Henry and Hellriegel. Hopefully this is just a weird glitch that will fix itself by the end of the day. Never was able to play a game either.
ive just gone from level 97 to 0. Everything is unlocked, but I get warbonds as I level up.
All of my class levels are at zero now after grinding for three days but my character level is still 31; Why is that?
Same here. Stats suddenly completely resetted, after not playing for some weeks. Ridiculous…
Have to laugh. One year later and still ongoing. The rank weirdness, that is.