Appreciate this is no real help but it might help in some way. I have a DS412+ and Infuse works perfectly with it. The NAS is wired into my router and then sent via wifi to my iPad and iPhone. Infuse saw my NAS and Windows PC and just required user names and passwords to connect.
I just downloaded an app called File Browser from Stratospherix. I went for the paid version but they also have a free version to allow testing connections. Those with problems with a NAS might want to try something like that to see if it can connect to their NAS. On my Ipad it scanned my network and found my DS412+ and my PC. On my iPhone it saw neither but all I had to do was type in the network name and it found it and connected. I’m suggesting that if people cannot connect with Infuse, they could try this and if it does not work either, it shows a problem with the setup rather than with Infuse.
Having said all that, it sounds as if the next version of Infuse has improved network support which can only be a good thing.