Unfortunately QRPC status are not renewed/prolongated each time you reach the required amount of Qpoints, but it works just like remdk described it : at the renewal date, they will check if you meet the renewal criterias (number of Qpoints earned during the previous 12 or 24 months AND minimum number of QR operated flights).
Upgrade Me 2017 should check again the Tier Calculator in a few weeks or months. It will probably unfreeze and show the correct amount of Qpoints he needs to renew it's status (the rule for Platinum status is 540 Qpoints during the previous 12 months or 1080 Qpoints during the previous 24 months)