FTPS Server on DMZ , external Users can not access !

Hi All,

FW: XG SFOS 18.5.4 MR-4-Build418

i'm using ftps server configured with windows os server (IIS) in DMZ
With user isolation. users will connect from external to only upload files
There are dnat rule and firewall rule configured:
dnat rule:----------
original src=any
original dest= wan interface (Public ip)
original service: 990

SNAT=Original
DNAT=ftps-server ip
PAT=Original

Inbound interface= Port wan
outband interface= Any

Firewall rule:----------- WAN > DMZ
SRC Zone=WAN
SRC Network & devices=Any
During scheduled time= All the time

Dest Zone=DMZ
Dest Networks= WAN interface (Public IP)
Services= Any

remote Clients computers has tool to only upload files on ftp server
task automatically configured:
ftp://ip public (HQ)
Port 990
Implicit connexion
passive mode
Username & password (already configured on ftp server and has all permissions on folders

But user can not access to ftp server, i dont' know if i forgot something when configuring rules on FW
the log of tool is:
___________________________________

Licence expiry date: 31/12/9999
Set LocalDirectory to C:\Windows\System32
Licence expiry date: 31/12/9999
SetSSLProtocol: min=DETECT, max=DETECT
waitOnShutdownSSL=True
StrictReturnCodes=False

Starting handshake
...........
..........
..........
Handshake started
Waiting for handshake completion
Processing hello
ProcessMessages(Handshake)
Handshake Message: ServerHello
Using extended_master_secret
Handshake Message: Certificate
Handshake Message: ServerKeyExchange
Handshake Message: ServerHelloDone
ProcessMessages(ChangeCipherSpec)
ProcessMessages(Handshake)
Handshake Message: Finished
OnHandshakeComplete - waiting for lock
OnHandshakeComplete - in lock
OnHandshakeComplete - exiting lock
OnHandshakeComplete - exit
Synchronous handshake complete

Setting socket timeout=120000
TransferBuffer timeout=120000
SocketController timeout=120000
SecureSocket timeout=120000
TransferBuffer timeout=120000
SocketController timeout=120000
SecureSocket timeout=120000
Command encoding=System.Text.SBCSCodePageEncoding
Setting socket buffer sizes=-1

220 Microsoft FTP Service
---> PBSZ 0
WaitUntilCompleted(1, EndSend)
Wait begin: TransferBuffer.Read (timeout=120000)
Wait end: TransferBuffer.Read
200 PBSZ command successful.
---> PROT P
WaitUntilCompleted(3, EndSend)
Wait begin: TransferBuffer.Read (timeout=120000)
Wait end: TransferBuffer.Read
200 PROT command successful.
---> USER john.smith
WaitUntilCompleted(5, EndSend)
Wait begin: TransferBuffer.Read (timeout=120000)
Wait end: TransferBuffer.Read
331 Password required
---> PASS ********
WaitUntilCompleted(7, EndSend)
Wait begin: TransferBuffer.Read (timeout=120000)
Wait end: TransferBuffer.Read
530 User cannot log in, home directory inaccessible. -------> But password & permissions are correct !!
Expected reply codes = [230,202,332] (strict=False)
Purging task queue
Defaulting to Unix parsing
OnReceive closing (socket not connected)
Dispose()
CloseConnection(e=null)
Closed socket
Notified active send result 7
Close() called when open
CloseConnection(e=null)
Killed control socket
KeepAlive thread finished.
____________________________________________________

I thought it was a problem of password or permissions, but I checked everything without result
If anyone has encountered this problem, please help us to solve it

Thanks