Not fair Competition!
Atleast u get lotsof invites and complete 5 or more surveys in a day.
But for INDIA it is pathetic , we hardly get 5- 10 invites a day and qualify for 1-2 surveys in a week.
so i feel its totally unfair for countries like India and others.
might be its a glitch for you and will get restored, u can only raise a support ticket and hope for the best.