Thank you, Sheila! Maybe this will fix it..or rather... prevent the online Intuit login prompt to happen every 7 days or sooner, depending on ...I don't know what? 

The 90-day thing... to me, is new - I had upgraded from QB 2012 Pro about a year ago as I do not do anything online. Now that I'm a sole proprietor, QB is used only for billing, accounts payable, check deposits, credit cards, and sales tax liabilities. I'm crossing my fingers.