New purchaser, today in fact.
I bought the Architech+Pro OCR version.
I am missing my high speed scanner in the scanner list, only my Epson flatbed scanners are showing.
Environment: Windows 10 64bit
Scanner: TWAIN - Kodak 2400 series (not shown)
Scanner: Epson ET-3760 multifunctiion (shown)
Other scanners are missing also, but in general, in Adobe Acrobat Pro DC, all of my scanners show.