Yodlee Get Transactions REST Call Returns Empty Body

I am testing the getTransactions REST API (http://ift.tt/2l0TsVd).

I am getting back 200 status code but the body returned in the response is empty "{}" to be precise. I have 5 user test accounts and neither of these returns any transactions.

I have tried it with and without the '?container=bank' (or creditCard) but no data is comming back.

When I execute getAccounts I get back a couple of accounts for each test user.

Not sure what the problem is. Is it possible that the test accounts were set up without any transactions? Is that likely?