Transfer of sub-site using: NSCloner plugin appears to be getting blocked by firewall?

I’m trying to transfer one of my sites from another install using teh NSCloner plugin which is an excellent plugin for transffering sub-sites from other sites to other installations.
I’m attempting to move: using the NSCloner functionality (which is worth learning about imo because they have done an excellent job on their product).

However, the transfer keeps freezing at a certain point early on. I spoke with NSCloner and they have looked into my Website and let me know that they think the problem is a firewall or security feature on this host is blocking the proper transfer of the Website to the new install at

Can you help with this?

NSCloner info is available here:
I’m using cloner pro.

Can you help?