problem creating order and getting balances

[Stefan Kurtenbach]

balances = client.get_my_balances("0xD234221C38Ea33B5D785c02B2185CbBAFB0F7b18")
print(balances)

returns
{}

Am I doing something wrong?

Also I can not create orders..

order = client.create_order('ETH', 'TUSD', 145, 0.15)

results in

idex.exceptions.IdexAPIException: IdexAPIException: You have insufficient funds to place this order.

Thanks!!