Its only AFTER you earn back your upgrade(4 months is approx120 days so you still have20 days leeway for not surfing) that the upgrade will revert to earn the new%, depending on your account level.

• 只有当你拿回升级单位的本金后（个月大约120天，假如你有20天不冲浪也没事）在以后的月份根据你的帐户级别实行每天%25息。