I have the same issue, can't login to Chase with the new GB update. I've tried uninstalling, reinstalling, rebooting etc to no avail. I receive:
"We're temporarily unable to connect to Chase. Please try again later. Thanks for your patience."
The Chase app reviews show MANY people are having the issue as well on the EVO. Someone just comment that they "spoke with Chase today, they're aware of EVO issue but will call back when this is resolved". No timeframe given.