Canara Setu is working for HSBC, it is able to fetch the bill. SBI Unipay is still showing error so HDFC Plat DC users you would need to wait until SBI fixes it.
I think HSBC is now upgrading their BBPS APIs as earlier they didn't show the bill amount due and we would need to manually enter the amount and pay, now its showing the total bill due. Still it doesn't update the amount if a payment is made.