Lost 1 level of exp

I was playing in the Baal event then i lost connection and when i relogged i had lost alot of exp. My stamina was also still used up, and before the Baal event i was grinding alot of exp. The only thing that rolled back was my experience all the other things are the same. Now the problem is that im racing to lv40 for the beginner reward and i fear im going to miss out on it now, or it will become realy close. I also bought stamina with 20 gems which are wasted now.

I hope there is time for you guys to figure out what happend to my exp or stamina.

All the help will be appreciated.