Hi, Sorry to hear that. Here are some standard troubleshooting steps that may resolve the issue: # Please check if you have [[Enhanced Tracking Protection in Firefox for desktop|Enhanced Tracking Protection]] (ETP) enabled. You can do that by clicking the shield [[Image:Fx89ShieldIcon]] icon in the left part of the address bar. #* If ETP is enabled, try disabling it. # If the problem is not fixed, try [[How to clear the Firefox cache|clearing Firefox cache]]. # If it does not help, try [[Clear cookies and site data in Firefox|clearing cookies and data]] for the website you experience troubles with (''warning: you will be logged out on this website''). # If it also does not help, try [[Diagnose Firefox issues using Troubleshoot Mode|running Firefox in Troubleshoot Mode]]. If the problem doesn't persist, please follow the steps from [[Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems | this article]] to troubleshoot further. # If nothing from the above helps, try [[Manage Firefox profiles|creating a new Firefox profile]] and check if the issue persists there. If it doesn't, you can [[Restore bookmarks, passwords and data from an old Firefox profile|start copying files from your old profile to the new one]] to identify which one causes the issue. See [[About your important data and their files|this article]] on what files to copy.

Removal of cookies solved the problem. Not the first time an app or doc failed to properly load in Mozilla but work fine in Chrome or Edge. Annoying as all get out since I prefer the Firefox interface. Thanks again for the very helpful tip. fbh

You are welcome! Can't comment on this particular case, but often (apart from real web compatibility problems) websites seem to work in different browsers that you don't use just because there are no cookies saved in those browsers.

Yup. Earlier suggestion was to purge cookies. Worked like a charm -- problem solved. Thanks for your response. fbh