Hi there, BenTam.
Thanks for your quick response.
I've tried replicating this on my end using the .IIf import kit found on the link that I've provided and it's working fine. I'd suggest downloading the file again using the .IIF kit. Once done and the still issue persists, I'd recommend giving our Technical Team a call so they can better isolate this matter. They have the necessary tools to work with you to find out what exactly may be causing this issue.
To reach them:
Please let me know if you have further questions. I'll be around to help. Have a great weekend.