Keith has two NAS drives attached to his network and none of his Windows-based computers can see the shared data folders, but his Android devices can. Leo says that since Keith's Chromebook and Android devices are based on Linux, it can probably see it without any emulation or extra drivers. The NAS could have a non-standard file sharing protocol that won't allow Windows to see it because it can't understand it.
Leo says to browse to the static IP address. He might want to try mapping the drive using that address. Since the NAS company is offering a full refund, that indicates they know the protocol their using is a failure. So Leo advises taking them up on the refund and buying a Synology NAS.