I cannot enter all 6 digits of my IP-PIN number into turbotax "Sign Your 2024 Return page?

What you were being asked to enter was a 5 digit self-selected PIN for e-filing the tax return.

To enter, edit or delete a 6 digit IP PIN

Click on Federal Taxes (Personal using Home and Business)
Click on Other Tax Situations
Scroll down to Other Return Info
On Identity Protection PIN, click the start button

I eventually got a tech support session going and was guided to the OTHER TAX SITUATIONS after some probing.  Why Intuit HELP did not point me there when I was getting a REJECTION CODE from the IRS is a program problem that needs addressed.