No, the resources (data and minutes) provided in the Century package will not rollover. They are allocated daily and must be used within that day. Each user will get 1GB and 60min/SMS on a daily basis at midnight.
No, the Century package is not auto-recursive. After the 100-day period ends, the offer will not automatically renew.
No, the Century package does not allow multiple subscriptions within the 100-day validity period. Each user can only have one active subscription at a time. The offer can be subscribed again after expiry only.