I finally got a support rep who was able to understand the problem. Yesterday (28 Dec 23) she was able to use my info & code to generate a new "sale" with a new activation code. I copied the new activation code and pasted it into the activation input field and Wham Bam, Thank You Ma'am - I am up and running. She says they only support 3 years of product, so if the person you get on the phone doesn't understand, ask for an escalation. The number I called is [phone number removed] - 1st fellow was eager to help but was uncomfortable trying to bypass the system in place. Turns out my activation code got changed to include a lower-case letter, but the input field (for ALL Intuit products!) forces everything to upper-case. The new code worked immediately!
