Can't join my qnap to the domain - error

I can’t join my qnap to the domain (Windows server) using quick config method nor manual. Any help would be greatly appreciated.

Time Sync is correct.

Quick Configuration wizard.
Full DNS domain name: ***.org.uk
NetBIOS domain name *** (auto populates correctly too)
DNS Server A - 10.206.10.100 (This is the IP of the domain controller)

Next page in the quick configuration wizard.
Select the domain controller:
Two domain controllers get listed automatically, the one I am interested in is ..org.uk
I add the domain controller above.

Credentials
This is where I get confused, I use my own domain admin account - “nico.michael” and password.

Join - failed to join to the domain.

Microsoft network settings failed. Please check the DNS server, domain name, and user name and password for logging in the domain.

======== DEBUG START =======
/usr/local/samba/bin/net time set -************
Sync time with domain name fail, try to sync time with IP
/usr/local/samba/bin/net time set -S 10.206.10.100
Sync time fail with IP
[command] echo ******** | /usr/bin/kinit "nico.michael@.ORG.UK"
Password for nico.michael@
.ORG.UK:
Specify WORKGROUP = ***
[command] /usr/local/samba/bin/net ads join -S ** -U “nico.michael%" -s /etc/config/smb.conf
Could not initialise message context. Try running as root
Failed to join domain: Access is denied
[command] /usr/local/samba/bin/net ads join -S ..org.uk -U "nico.michael%
” -s /etc/config/smb.conf
Could not initialise message context. Try running as root
Failed to join domain: Access is denied
[command] /usr/local/samba/bin/net ads join -U “nico.michael%" -s /etc/config/smb.conf
Could not initialise message context. Try running as root
Failed to join domain: Access is denied
[command] /usr/local/samba/bin/net rpc join -S *** -U "nico.michael%
” -s /etc/config/smb.conf
Could not initialise message context. Try running as root
Could not initialise message context. Try running as root
Failed to join domain: Access is denied
[command] /usr/local/samba/bin/net rpc join -S ..org.uk -U “nico.michael%" -s /etc/config/smb.conf
Could not initialise message context. Try running as root
Could not initialise message context. Try running as root
Failed to join domain: Access is denied
[command] /usr/local/samba/bin/net rpc join -U "nico.michael%
” -s /etc/config/smb.conf
Could not initialise message context. Try running as root
Could not initialise message context. Try running as root
Failed to join domain: Access is denied