Not sure it’s too late now. I deleted everything and re-installed and re-mapped the shares. For now it’s all working.
Not wishing to sound overly harsh against Infuse 5, it’s certainly a damn sight easier than v4 to set up across devices. I’ve just been messing around trying to decide which to use having wasted countless hours with Plex and things CONSTANTLY breaking, esp as they have no proper support for IPv6 making remote access impossible for folks with ISPs using CGNAT for IPv4. As such I just need something that has a better UI than the ENDLESS scrolling that you get with iTunes UI, that will auto-play next episodes, and that I can download media to the iPad with for remote viewing (I used to use Plex for this but pretty much EVERY time I actually needed it I got the ‘Could not connect to server’ error, despite dozens of hours of tests and checking all was well - I ended up HATING Plex with a vengeance).
Only thing I can’t work out is that sometimes when I click ‘Use local metatda’ the folder just vanishes and I’m left with ‘Nothing to see here’. Also, under library view, what is supposed to be in other? Is that for files Infuse can’t match. It was rammed full of stuff a few days ago (presumably because it was fetching metadata), now almost empty save for a few rogue shows that I have now renamed (despite naming them correctly I often forget that iTunes screws up the file names AGAIN when you import, leaving you often with just the episode number and title so you have to rename again). Having now correctly named the shows, will Infuse trawl the files and correctly assign them to shows / seasons etc or do I have to clear all metadata first (I hope not seeing as the size of my library means it takes a while to compile it all again :()