I noticed that I can't answer protected questions. I don't want to actually, but it says:

It was FAQ for Stack Exchange sites, but I also didn't have an ability to answer other protected questions.

There I earned 270 reputation points + 100 reputation points bonus. Then I offered 350 reputation points as a bounty. Then I earned 59 reputation points. Today started another bounty (50 reputation points), etc - I offered 4 bounties with total 500 rep. Despite the fact I started from bonus, I must have an ability to answer protected questions, as I earned reputation points there.

As for May 18 18:47 (UTC), I earned 593 reputation points on Meta Stack Exchange.

I now have enough reputation points, but I would like it to be fixed, because I like offering bounties very much.