I'll help you get to the bottom of this issue without a moment's delay, @jagrover.
What error or message appears when you try opening your company in Firefox? To further deduce whether or not there's an issue with your browser, try loading QuickBooks Online in a FireFox private window. This can be opened from within Firefox by pressing Ctrl+Shift+P. Within this new window, head back to QBO and try opening your company again.
Should the issue persist, please be sure to make a note of the error message or whatever behavior prevents you from loading the company. Any additional information or screenshots you can provide me will help to expedite the troubleshooting. Thanks for coming to the Community, and have a very Happy New Years!
Still will not open in Firefox. I log into QN Online with no problem. When I choose the company to open I do not get an error message, just whirling circle.
I've checked our resources and found no reported issues similar to yours. We can escalate this to our engineers so they can investigate the cause, and fix it as soon as possible.
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