50 question per month limit?
I hit the limit of 50 questions per 30 days. How I can increase my quota?
Short answer: you can't.
We consider 50 questions in 30 days to be a fairly generous allotment. That's almost 2 questions per day. What are you working on that you're generating that many questions?
Looking at your questions, I see that a lot of them are similar. Perhaps you would benefit from reading a few tutorials on the technologies you're working with. I recommend taking a step back and checking whether your questions have already been asked by other users or whether you can do some research first and get to the bottom of the problem.