You will remain a newbie, regardless of how many times you post. It doesn't matter how old your account is ~ if you don't post at least once per 14 days, you won't have any activity to catch up on outside your current cycle.

Next week when the activity starts updating on this forum, you at most can get up to the 28 activity level, which is still newbie. After another 14 days, you will then finally rank up to Jr. Member ~ not that difficult to understand, right?