This questions has been around awhile and answered a couple of times but I still have the problem even after using all correction methods previously submitted to this question. I can load the Fifth Third Bank site (53.com) but cannot sign on; I get the usual "OOPS" message with the number to call Fifth Third Technical Support. I called their support and the first question they asked is what browser I'm using. After responding that Firefox was my browser, they told me that everyone who uses Firefox is having problems. They contend there is nothing on their end causing the problem and that since users of other browsers were not having problems that the only solution they could offer was to switch to Edge or Chrome. That's ridiculous! What is causing this problem? I do not want to move to either Chrome or Edge!