I have tried to connect my bank account to QuickBooks and it has connected but only shows one transaction for my bank? Update doesn't do anything either? Any ideas?

Hi 

We are banking with HSBC. The transaction that pulled through was something that happened yesterday but when i hit update nothing new comes through (there should be transactions from today) and also the amount showing in the bank account is incorrect. When i hit update there is no error message it just tells me its all updated but obviously it hasn't. Any help would be appreciated.