The Credits system is so designed that once the user activates his hosting account, the accounting system has to be changed. Now the credits that you earn track the "in-active" time. So the accounting has changed completely. Therefore, you have to earn these credits.
Don't worry, the credits system is very friendly. It will give you more than 40 in time;). Just keep up your spellings and active participation.
Good Luck. (Most people apply right after they have 10 credits, so they don't get such a huge blow.. your case was indeed a diffrent one)
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