I'm new to OMV, but recently installed OMV6 (6.0.35-1 (Shaitan)) on an RPi3B+.
Everything works great apart from accessing my NAS from my iPhone. If I try to save from an app (Example, Document Scanner Pro I want to save my scanned PDF to my NAS) I get the error "The Operation couldn't be completed. Attribute not found". If I got the default iPhone Files app and try to copy a file to my NAS, I get "The Operation Can't Be Completed. OSStatus Error 100093"
From searching this forum there was only 2 other threads on this - neither has a solution. One persons solution in one was to buy other apps.... and the other thread said OMV6 works fine (Was telling the OP to upgrade from OMV4 to OMV6).
My setup is a new install of OMV6 though