Is the credit showing up on line 19 of Form 8911 (assuming it is the personal credit)?

Is it in a qualified Census Tract?

The Input Screen only shows Part I and II, not Part III. After inputting, Form 8911 does not appear among the active forms

It sounds like the problem isn't transferring to Schedule 3, it is calculating the credit on 8911.

I assume you have double-checked that everything is filled out on the screens?

I don't use ProConnect Online, but there has to be some way to see Part 3.  My guess is that there is no credit due to the limits with AMT (lines 16-18 of 8911), but until you can see the actual form, it is difficult to tell you for sure.