I have three users in my organization with last names with apostrophes (e.g. O'Connell, O'Leary, etc.) that did not import. My guess would be because of the apostrophe on the last name.
We are really sorry about this.
This has been notified and we are looking into this, we will keep you posted once we fix the issue.
Feel free to write to us for further support.
I'm glad to inform you that we have fixed this issue.
You will now be able to fetch users with last names like O'Connell etc.
Please feel free to reach out to us anytime.