Been a while since had to use direct cable, but we have had a few problems connecting wirelessly when my wife and I switch devices we want to use to receive the scan. I can’t recall the details, but things I tend to check that have resolved those issues had to do usually with the scanner not the software. Check setting > WiFi > Connect Mode is set to Access point connection. And of course your WiFi settings. Then one thing for us was selecting the little person icon in the upper left and choosing which person/device we are trying to reach. Sorry that’s not a lot of help.
Well… it appears to have worked!!
I followed the outlined steps AND had to reinstall the Scansnap Home software for the 1,000th time but it is at this moment working. Thanks for the detective work!