OS5 / file access via Android App

I have an MyCloud Ultra Ex2 upgraded to OS5.
Access from Windows machines runs fine, but I cannot access the files anymore using i.e. ‘CX Datei Explorer’ App via SMB.

It identifies the NAS, but with my Login/PW I get ‘Can’t connect …’
Any ideas?


OK, just figured out that it seems, that the Android file manager can not deal with SMB3, which is by default the file transfer protocol with OS5 (in network settings). Changed to SMB2,SMB3 works with ‘Cx Explorer’.