Hello admin,
Just of curiosity, how it is possible a single user, in specific @drop06, complete 3, 4 or incredible 9 "Your Surveys" surveys in a single day?
All time that I try to access this survey, I receive the following message: "No more surveys available. Sorry!". 

For reference, 24 minutes ago @drop06 completed one of this survey. But 26 minutes ago, I have tried this survey and I was stopped. 

Thank you!