@Hedi Gardi It looks like their is something going wrong with the status of the verification of your domains in your tenant. Could you please post the output of the following commands;
$credentials=Get-Credential
Connect-MsolService -Credential $credentials
Get-MsolDomain
If you have a unverified domain I would suggest to remove that domain by the following command;
Remove-MsDolDomain
Then run the following command;
Set-MsolDirSyncEnabled -EnableDirSync $True
After that, you could check the status of your domains again by running the following command;
Get-MsolDomain
Please let me know.