הפורומים

the qs, is it something ratio or absolute value?
as i started my campaign my str were above 2 % and there were some good clicks but in 2 or 3 days i have been kicked out and google asked me to improve words quality through the optimization or to try bid higher . now here is the question how the hell should i optimize?
and more ,the words that i picked on the beginning were good enough for 0.5$ and now they put the outragious price bid of dollar minimum and sometimes 5 or even 10$ what the hell is going on?!!!!