UNAS PRO Help

Not sure if right place pretty new to all this and having had a set up for few months now still learning , I have a Cloud gateway fibre and USW Pro max 16 poe a USW Flex 2.5G 8 and a few APS my wife bought me a UNAS Pro for xmas got it all set up added the hdds and seemed ok have slowly been adding folder and files etc. i had set up Apple time machine and seemed to be running fine until today i noticed it said cant find disk when checked it seems the UNAS PRo has renamed to UNAS-Pro-2 local i cant see to find away to change back to just UNAS Pro local i have it connected by a DACS cable and also ethernet as someone said you can in case the DACS fails any help thanks.