yesterday i was playing online and i ranked up from 11 to 13.
also my power level went from 4 to 5 and so did my stealth level.

but when i logged in today i lost all my progress.

why does this happen?

1.) Were you playing on a ranked server? Otherwise you lose the exp
2.) Did you leave the server correctly or were you dc'd? You may loose exp if you are disconnected.

1) i ALWAYS filter to make sure its a ranked server.
2) i constantly change servers so most of the time i leave correctly to make sure that if i disconnect i don't lose everything.

so it must be something else.

The progress saving in this game can be really touchy sometimes. I've never experienced progress loss that wasn't a disconnect but apparently for some people it's a daily occurrence. Maybe you can try to double or triple save your progress by entering and exiting servers to trigger the save.

Like Ctrl+C, sometimes you just have to button bash the svcker to make it stick.

Thanks for the advice. ill try that next time and ill see if it works.