Cant connect Sonos Libary

[Marv21]

Hello all,
as some of you guys know, i switched over to TrueNAS-SCALE-22.02.0.1 .
My Dad still uses his "old" Sonos Controller which iam not able to connect to a Share on my TrueNas. With our Computer I can see everything but with Sonos i get a "Access denied" error.
Of course the Username and password is correct, i even tried with enabling guest login. Is there a Trick? Tried searching here, but not a Single Thread in the Scale Section.
In the Core Section there seems to be a unofficial bugfix going around - will that be workable for Scale? @anodos?

Of course i enabled SMBv1 and NTLMv1 Auth.

Load smb config files from /etc/smb4.conf
lpcfg_do_global_parameter: WARNING: The "syslog only" option is deprecated
Loaded services file OK.
Weak crypto is allowed

Server role: ROLE_STANDALONE

# Global parameters
[global]
bind interfaces only = Yes
disable spoolss = Yes
dns proxy = No
load printers = No
logging = file
max log size = 5120
netbios aliases = truenas
ntlm auth = ntlmv1-permitted
passdb backend = tdbsam:/var/run/samba-cache/passdb.tdb
printcap name = /dev/null
registry shares = Yes
restrict anonymous = 2
server min protocol = NT1
server multi channel support = No
server string = TrueNAS Server
workgroup = HOME
idmap config * : range = 90000001 - 100000000
idmap config * : backend = tdb
create mask = 0775
directory mask = 0775

"timestamp": "2022-04-08T00:41:30.026137+0200",
"type": "Authentication",
"Authentication": {
"version": {
"major": 1,
"minor": 2
},
"eventId": 4624,
"logonId": "0",
"logonType": 3,
"status": "NT_STATUS_OK",
"localAddress": "ipv4:192.168.1.64:445",
"remoteAddress": "ipv4:192.168.1.233:33427",
"serviceDescription": "SMB",
"authDescription": null,
"clientDomain": "",
"clientAccount": "xxxxx",
"workstation": "192.168.1.233",
"becameAccount": "xxxxx",
"becameDomain": "TRUENAS",
"becameSid": "S-1-5-21-1650150519-3874338052-xxxxxxxx-xxxxxxx",
"mappedAccount": "xxxxx",
"mappedDomain": "",
"netlogonComputer": null,
"netlogonTrustAccount": null,
"netlogonNegotiateFlags": "0x00000000",
"netlogonSecureChannelType": 0,
"netlogonTrustAccountSid": null,
"passwordType": "NTLMv1",
"duration": 3890