How large a file can a Drobo save?

Brand new Drobo 5N2, 3T+ plus of space, but can’t copy or save a file >10G. My archive program fails, and teracopy will fail at 10-15G in a 30G file copy. I have current firmware, and done 2 disk resets - including changing hardrives with no success. I have even tried just using the public share.

Is it normal that Drobo will not handle a 10+ GB file? Drobo support is non-response, I am considering return the unit to the vendor. (I also tried with SMB on and off)