FSx for NetApp ONTAP - Windows permission issues

Hi there, I managed to add FSx for NetApp ONTAP to our domain with FSxServiceAccount as described on the product page. However, I am running into issues when I am trying to attach it to my Windows instance. (It works fine on Linux). I see the following issues:

• When I am running this command New-SmbGlobalMapping -Persistent $true -RemotePath \<IO of my smb>\share -Credential $creds -LocalPath G:I get the following error:New-SmbGlobalMapping : Access is denied.` - I am using domain admin credentials
• When I am running this command net use Z: \\<dns address of the smb>\share I got the following error: System error 5 has occurred. Access is denied. - Also with domain admin creds
• I can successfully attach via File Explorer > This PC > Computer >Map network drive, however I can not read/write to it. If I check the FIle permission mode in Propertires I can see that only the owner (FSxServiceAccount?) is allowed to write, however Read should work, but I can not change the permissions as domain Admin.

I am using Directory Service Standard Edition. Did you guys experience issues with this? What am I doing wrong?

Update: I managed to attach the disk, but I can not write or read any file on the disk. It is in OU=Computers, and allowed Everyone Full Access, also allowed Everyone Read/Write the NFS filesystems attached to the AD, but still not working. I am suspecting this is something NetApp specific, but we will see.

Update #2 Based on CloudWreck's comment I found the following: I am using mixed style.
I use the following code:

 net use P: \\WINDOWS\vol1 
$CurTgt = "P:"
$CurUsr = [System.Security.Principal.WindowsIdentity]::GetCurrent().Name
$acl = Get-Acl $CurTgt
$AccessRule = New-Object System.Security.AccessControl.FileSystemAccessRule($CurUsr,"FullControl","ContainerInherit,ObjectInherit","None","Allow")
$acl.SetAccessRule($AccessRule)
$acl | Set-Acl $CurTgt 

Get-Acl returns

Path Owner    Access            
---- -----    ------            
P:\  Everyone Everyone Allow  -1 

Also using this one:

 $CurTgt = "P:"
$CurUsr = [System.Security.Principal.WindowsIdentity]::GetCurrent().Name
$acl = Get-Acl $CurTgt
$usersid = New-Object System.Security.Principal.Ntaccount ($CurUsr)
$acl.PurgeAccessRules($usersid)
$acl | Set-Acl $CurTgt

Also tried this:

 takeown /F * /R
takeown : ERROR: File ownership cannot be applied on insecure file systems; 

But I am still unable to write/read files or create folders.

Update#3 I ran the following commands and changed the permission from the ONTAP side

vserver security file-directory show -vserver windows -path /vol1
vserver security file-directory ntfs create -ntfs-sd sd1 -owner DomainName\Administrator
vserver security file-directory ntfs sacl add -ntfs-sd sd1 -access-type success -account DomainName.COM\EVERYONE -rights full-control -apply-to this-folder,sub-folders,files
vserver security file-directory ntfs dacl add -ntfs-sd sd1 -access-type allow -account DomainName.COM\EVERYONE -rights full-control -apply-to this-folder,sub-folders,files
vserver security file-directory policy create -policy-name policy1
vserver security file-directory policy task add -policy-name policy1 -path /vol1 -ntfs-sd sd1
vserver security file-directory apply -policy-name policy1
vserver security file-directory show  -path /vol1 -expand-mask true

It changed the file permissions (mode), however I am still unable to read/write files. These are the current settings:

              File Path: /vol1
      File Inode Number: 64
         Security Style: mixed
        Effective Style: ntfs
         DOS Attributes: 10
 DOS Attributes in Text: ----D---
Expanded Dos Attributes: 0x10
     ...0 .... .... .... = Offline
     .... ..0. .... .... = Sparse
     .... .... 0... .... = Normal
     .... .... ..0. .... = Archive
     .... .... ...1 .... = Directory
     .... .... .... .0.. = System
     .... .... .... ..0. = Hidden
     .... .... .... ...0 = Read Only
           UNIX User Id: 0
          UNIX Group Id: 0
         UNIX Mode Bits: 777
 UNIX Mode Bits in Text: rwxrwxrwx
                   ACLs: NTFS Security Descriptor

                     ALLOW-Everyone-0x1f01ff-OI|CI
                              0... .... .... .... .... .... .... .... = Generic Read
                              .0.. .... .... .... .... .... .... .... = Generic Write
                              ..0. .... .... .... .... .... .... .... = Generic Execute
                              ...0 .... .... .... .... .... .... .... = Generic All
                              .... ...0 .... .... .... .... .... .... = System Security
                              .... .... ...1 .... .... .... .... .... = Synchronize
                              .... .... .... 1... .... .... .... .... = Write Owner
                              .... .... .... .1.. .... .... .... .... = Write DAC
                              .... .... .... ..1. .... .... .... .... = Read Control
                              .... .... .... ...1 .... .... .... .... = Delete
                              .... .... .... .... .... ...1 .... .... = Write Attributes
                              .... .... .... .... .... .... 1... .... = Read Attributes
                              .... .... .... .... .... .... .1.. .... = Delete Child
                              .... .... .... .... .... .... ..1. .... = Execute
                              .... .... .... .... .... .... ...1 .... = Write EA
                              .... .... .... .... .... .... .... 1... = Read EA
                              .... .... .... .... .... .... .... .1.. = Append
                              .... .... .... .... .... .... .... ..1. = Write
                              .... .... .... .... .... .... .... ...1 = Read