Either no site is getting created or specific parts are missing, e.g. Apps won't get installed in a workspace.
It's very likely that the service account used by Collaboration Manager 365 has expired. This happens when password expiration is enabled in your tentant (which is on by default)
Disable password expiration for the account used by Collaboration Manager 365. Also make sure it's prefix is always @<tenant>.onmicrosoft.com.
Use the following PowerShell example to set password never expire for just one particular account:
Set-MsolUser -UserPrincipalName <user ID> -PasswordNeverExpires $true
After that, please save your Collaboration Manager Template (again) and run a sync on your affected workspace or create a new one.
- Step by Step guide: https://support.office.com/client/Set-up-user-passwords-to-never-expire-f493e3af-e1d8-4668-9211-230c245a0466
- PowerShell Requirements:http://powershell.office.com