ShipRush UPS Basic and Pro issue

Working with a mutual customer who's index was corrupted. I followed the instructions and backup the database and rebuild it. That did not work. So, I tried to re-install. They use ShipRush for FedEx and ShipRush for UPS Pro. He no longer has daily pickup so tried installing UPS Basic. The error we are receiving when installing v12.1.13.7903 is:
Network error! Please check your Internet provider, network and firewall configuration. Error code "ZF60800".

Any assistance is appreciated.

Thank you