[Zubersoft]

If you have set your MobileSheets storage location (Settings->Storage->Set the MobileSheets Storage Location) to a folder on the NAS, and that path is the same on both devices, there is no need to use the library sync feature at all. Just copy mobilesheets.db from C:\Users\<your username>\AppData\Local\Packages\41730Zubersoft.MobileSheets_ys1c8ct2g6ypr\LocalState on one device to the same folder on the other device. The database will be updated, and due to the fact that the storage location is set to the same folder on both devices (the NAS folder), there is nothing else you need to do. Generally it's not advised to use the sync library feature if both devices are sharing the same storage location, as it will effectively be overwriting the files in the storage location.

Mike