Hello, This looks this issue is specific to this particular banking site and we definitely want to know more to help resolve this issue. It is likely that this particular functionality is not supported on Firefox and I would suggest that you report this to the bank and request them to support it soon. That said, there are a few things you can do from the details provided in the [[Websites don't load - troubleshoot and fix error messages]] SUMO article. Specifically, the section about [[Websites look wrong or appear differently than they should]] and reporting the website might help us provide more information. If this is a banking site used by any of the other volunteers who are willing to dig more to find out why, they will try to provide the resolution sooner. I know this is not really a resolution that will help you, but given that I don't have much information as to what is the offending part of the website causing the issue, I can only suggest this much. Thank you