Simple persistence. My final correspondance read:
"I do not understand why you cannot provide the PA State Tax ID number. It is an 8-digit number (not 9). It is required for all PA state tax filings. I'm required to provide this number with my own tax return. I need it immediately. Please provide this information now."
I was never able to use TT for PA because there was an error in the code that caused an infinite loop in the form validation process. Customer Support couldn't resolve the issue and refunded me. I was able to download their produced forms and load them by hand in the PA DirectFile site. No fun, and I shouldn't have to use TT again for this reason. Their error costs them $30ish a year for the rest of my long life. Let's hope Congress grows a pair (against TT) and makes tax filing free (like many of the other 1st world nations).